Just looking for a little guidance about making my projector screen

Yeah you've got what I'm saying. Maintaining a constant image height would matter to me if I were building a cinema room and having some lovely furniture built and a screen surround with motorised masks etc because then you can press a button and make the screen wider and it looks cool. But if I had that sort of money I'd be doing it with anamorphic lenses, not by overprojecting to the extent that I permanently lose a quarter of my vertical resolution and then scaling content down to fit.

It just seems that by doing this without any optics adjustment and using a scaler is a cargo-cult way of getting to this sacred constant image height system at the expense of resolution and overall image brightness.
 
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Agreed. I wouldn't go for a CIH setup without a lens, especially if the height was available for a 16:9 screen of the same width. Negatives with no benefits. Unless you don't want a 16:9 image of that size of course, or just really really like the idea/look of a scope screen.
 
I think we need to set some constraints, namely that we're dealing with a 16:9 projector and no anamorphic lenses, which is what the projector in question is. We also need to accept that there's no lens zooming happening between the picture modes.
There's absolutely no need to "set some constraints" as you suggest. Read through the thread again. You'll see it's detailed that there's three different methods for achieving 2.40:1 "scope" projection. The scaler method is one of them. This is NOT zooming and it's NOT using anamorphic lenses. It's the OTHER method.

With that said, you're still looking at this wrong. It's impossible to get a 2.40:1 image out of a 16:9 projector that is larger than a 16:9 image coming out of the same projector.
Again your lack of experience is showing. You need to understand what scalers are and what they do. Your thinking is limited to the 16:9 panel equalling the screen shape. That's where you are going wrong.

Why don't you have another look at the set-up steps I listed in post #8.

Now forget you're own experience for a minute and just follow what I'm saying. Question: What happens when you show a letterbox film on a 16:9 projector? Answer: you get black bars above and below the image. Parts of the 16:9 panel have no picture.

Now zoom the projector to its maximum picture size. This will be the last time the zoom lens is touched.

Let's say that the width of this 2.40:1 scope image is 9ft (108") from left to right. The height will be 3ft 8" (45"). Mark out the boundaries of the image. This defines the size of the scope screen. In pixel terms the image is 1920x800

This next bit is where the scaler is used. It can remap an image to any resolution on the display panel. When playing 16:9 what we need is an image 3ft 8" tall x 6.66ft wide (45"x80"). This is a 92" diagonal image; still a decent size image for TV viewing/gaming/movies in 1.78:1 ratio. In pixel terms 800 tall x 1422 wide. This is how it's possible to have a 2:40:1 image that is bigger than a 16:9 image.



Now, if you have a 100" wide area of wall to fit a screen, and you put in a 16:9 screen and projected a 2.40:1 image onto it, it would be exactly the same size as if you filled that 100" wide gap with a 2.40:1 screen. The only difference is there would be excess screen at the top and bottom, which you mask off.
...and as I've said now many times in this thread; you end up with the lowest quality source image producing the largest pictures. Do it the other way round and yes, 16:9 gets smaller, but that's not a bad thing. All those crappy 16:9 SD TV channels with their MPEG artefacts get smaller so you don't see the warts quite as easily. Even the broadcast HD channels which can look ropey once there's a lot of movement will look better too.

By trying to do constant image height on a 16:9 projector you have to mask off pixels when you want to show a 2.40:1 image and then you have to mask off more when you want to show a 16:9 image. If reducing the 16:9 image to the same height as a 2.40:1 so that they match is the most important thing about your projected image then that's great, but I don't see why you'd do that when you could opt to use the full panel to show the 16:9 content.
Question: What's the purpose of the screens border? Answer: To define the projection space and to enhance apparent contrast.

Question: What's the prime objective of a dedicated cinema room? Answer: To watch movies in the best image quality and most immersive way possible.

Masking off the unused upper and lower parts of a 16:9 screen when watching 2.40:1 isn't always practical or possible. Horizontal masking like this can work out expensive or labour intensive.

We are far less aware of unused screen to the left and right on a scope screen than empty space above and below an image on a 16:9 screen. When the image fills a scope screen it looks far more impressive that the same size image on an unmasked 16:9 screen.

Also bear in mind that side masking a screen a 2:40:1 is relatively easy to achieve. A set of weighted curtains will do it.

Now think longer term. Projectors with motorised zoom lenses and memory settings are getting cheaper. What was a feature on £10K+ projectors is now found on £2.5K models. That trend will continue. We also have 2nd and 3rd gen 4K projectors falling in price too. Either of those features alone makes scope projection a very attractive future proposition. So why not prepare the ground now with a scope screen if the opportunity is there?
 
Again, you're arguing against a point I'm not making whilst trying to make yourself feel better by telling everyone how much more you know about a subject. You have no information with regards to my experience, yet somehow you seem to want to use it to attack an argument. Re-read my posts, I haven't disagreed that what you are saying produces the results you are describing.

Why is it a problem that a 16:9 image is larger than a 2.40:1 image? Why would you artificially limit the finished size of 16:9 content just so that it is the same height as 2.40:1 content? What do you have against using 25% of your vertical resolution? Why is 16:9 content the second class citizen, what about films shot at that aspect?

You're still claiming that a 2.40:1 image will be larger than a 16:9 image when displayed on a 16:9 projector. Either you're being wilfully obtuse or you have difficulties reading. Obviously if you zoom the projector up you make the 2.40:1 image larger, but there is nothing stopping you also displaying the 16:9 image at this zoom level other than a strange desire to digitally shrink it down.

I understand every part of the 'how' that you are describing, I don't know how I can make that clearer. The only part of this I don't understand is why you see it as desirable to overproject and downscale 16:9 content just so it matches the height of 2.40:1 content - it doesn't make your 2.40:1 content any bigger, physics is already dictating the size of the image. You've already done the sums - viewing 16:9 content in this fashion leaves roughly half the pixels of your projector dark whilst offering no advantages to the display of 2.40:1 content.

Again, I can fully understand why you'd take this approach with a system that has indexed focus / zoom etc, and systems with anamorphic lenses. But not in the scenario that you are proposing.
 
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Lucid, do you deal exclusively in nonsense or something? You keep telling people they don't know what they're talking about whilst looking like you don't know what you're talking about.

The method you are proposing would limit 16:9 content to 1422x800, you don't seem willing to accept that this is a limitation for some bizarre crazy reason.

By doing what you've said, you are limiting a 16:9 projector's height to that of 2.40. You are removing picture content of 16:9 media.

All the fluff you're bringing in like anamorphic lenses and the way cinemas screen is completely irrelevant because a cinema can have the luxury of using optics to scale the image horizontally so that no resolution is lost.

That's utterly irrelevant if your suggestion isn't to use lenses to horizontally stretch the image being projected.

The way you've decided to respond in such a condescending way as well is just embarrassing and undermines the rest of what you're saying.

You're really conforming to the audiophile stereotypes recently. I don't know how anyone would think that setting up your projector so that you don't see or use half the pixels is a sensible suggestion.

It's no different to masking a 16:9 TV to 2.40 and then scalling 16:9 media to fit the height of the mask.

Also your comments about caged not being able to understand that 16.9 isn't the largest picture are just farcical.

On what planet is 1920x1080 smaller than 1920x800? I don't think it's caged that's having issues with understanding...
 
Why is it a problem that a 16:9 image is larger than a 2.40:1 image? Why would you artificially limit the finished size of 16:9 content just so that it is the same height as 2.40:1 content? What do you have against using 25% of your vertical resolution? Why is 16:9 content the second class citizen, what about films shot at that aspect?
Some of us want a really large 2.40:1 image for the prime source which is letterboxed Blu-rays. But we don't want-, or can't accommodate- a massive 16:9 screen to achieve it. Going for a 2.40:1 screen gives us this. That's nightrider1470's plan.

We have nothing against using the panel's full resolution for 16:9...so long as the projector has lens memories or there's an anamorphic lens with sled. But in this situation neither of those options are available. So we have to go with what is available. In this case it is electronic manipulation of the remaining source aspect ratios to fit the screen height.

Doing this with a scaler is surprisingly effective despite the loss in resolution. In fact, it's only really feasible because we have 1080p projectors. They have enough resolution that we can afford to use a smaller part of the panel to generate a 16:9 image in the centre of a 1080p 16:9 "canvas". If this was a 720p projector then it would be a non-starter. The remaining resolution of the scaled 16:9 image would be too low. However, with a 1920 x 1080 canvas we can scale 16:9 down and still have more pixels working than we would have had with a 720p working at full panel resolution. It's about acceptable compromises to achieve a goal that is different to what you want. But that's okay. People are allowed to want different things.

I take your point "What about everything that isn't scope?". Sure, there's feature films that are 1.33:1, 1.66:1, 1.78:1, 1.85:1 and 2.0:1. There's stuff on TV too that is 1.33, 1.78:1, 1.85:1.

So how much is 16:9 source material important.... I think the answer lies in how the projection system is used.

I did a quick check of the stuff recorded on the media centre in my lounge. There's about 180 items in the film library currently. I have films originating from the 40's through to modern day. There's documentaries, European cinema, big Hollywood blockbusters, small independents, a couple of TV box sets, some stand-up comedy, animation, music video DVDs and the usual range of feature film genres. It's representative of what this family watches regularly. Just over 2/3rds are in 'scope format. They are at least 2.20:1 or wider. So on my system there's only a 1 in 3 chance that the film is something other than 'scope. The bulk is scoped. I'd say that's a significant proportion.

Those films that are closer to 16:9 will just have to be smaller. There's less of them than those with letterbox content. That's just the way it is

You're still claiming that a 2.40:1 image will be larger than a 16:9 image when displayed on a 16:9 projector. Either you're being wilfully obtuse or you have difficulties reading. Obviously if you zoom the projector up you make the 2.40:1 image larger, but there is nothing stopping you also displaying the 16:9 image at this zoom level other than a strange desire to digitally shrink it down.
You still have this notion that screen aspect ratio is wedded to panel aspect ratio. Our thinking goes beyond that.

In an ideal world nightrider1470's projector would have lens memories, but it doesn't. What we have instead is a scaler, and so we treat the projector's 16:9 panel(s) as a canvas on which we can draw a variety of shapes that represent screen aspect ratios. Sure, we are using just a 2.40:1 strip in this particular instance and some pixels above and below the image don't get used. That's no different than how 2.40:1 works normally anyway, so there's no difference there.

The big hurdle for you seems to be the notion of a small 16:9 image inside the larger 16:9 panel area. You know that the goal is the largest 2.40:1 image without having a massive 16:9 image. Without the benefit of lens memories or anamorphic lenses in this instance then the remaining option is scaling. It's an acceptable compromise based on five factors:

1) A massive 16:9 screen isn't acceptable
2) The cost of upgrading to a lens memory projector is prohibitive
3) The cost of an anamorphic lens and sled is prohibitive
4) There is sufficient resolution in a 1080p to create a 16:9 window with a pixel resolution greater than 1280x720. The actual resolution would be 1422x800
5) The aspect ratio can be controlled with presets from the scaler

If at some point in the future the projector was upgraded to one with lens memories, then it's simple to change over to full 1080p optically zoomed down to a 92" diagonal 16:9 area.

Again, I can fully understand why you'd take this approach with a system that has indexed focus / zoom etc, and systems with anamorphic lenses. But not in the scenario that you are proposing.
Well I hope this clears it up for you.
 
He's already said you're arguing against a point he never made.

He's pointing out that it's a compromise, and why would you want to do that, and your response to that is "it's not a compromise, you need to accept that 16:9 isn't the largest screen format" whilst ignoring that it's relevant to the display's fixed screen ratio and output resolution.

The projector is 16:9, therefore a 16:9 is the largest image you will get on it.

We all know what you're talking about when you're talking about 2.40:1 screens, it's not at all ambiguous.

It's simply that caged, I and others don't think the compromise is worth it because of how it's set up you'll never be using the projector to its fullest extent.

That's not to say you shouldn't do it, but it's also not a reason that it shouldn't be questioned.
 
I think personally I'd do the 2.40:1 screen, get some curtains for the sides of it and just reach up and zoom my projector in when I wanted to pop 16:9 content on, and stuff the cash I was going to spend on a scaler into the fund for a better projector.

Or borrow a Christie M series from work :D
 
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The method you are proposing would limit 16:9 content to 1422x800, you don't seem willing to accept that this is a limitation for some bizarre crazy reason.
Yes it does, but it's not the restriction you believe.

For a good 10+ years we have had home cinema projectors operating at 1280x720. We have HD ready TVs operating at 1366x768. All are capable of displaying a perfectly proportioned 1080p image, albeit at a lower resolution. Further more, if you owned a 720p projector then that's the resolution at which you'd be watching your full frame 16:9 1080p images. Letterboxed Blu-rays display at a lower resolution: 1280x533 pixels

Now, you tell me...have 720p projectors suddenly stop working with 1080p sources?

Do owners of 720p projectors and 768 HD Ready TVs find Blu-ray completely unwatchable?

By doing what you've said, you are limiting a 16:9 projector's height to that of 2.40. You are removing picture content of 16:9 media.

What 16:9 media exactly?


All the fluff you're bringing in like anamorphic lenses and the way cinemas screen is completely irrelevant because a cinema can have the luxury of using optics to scale the image horizontally so that no resolution is lost.

That's utterly irrelevant if your suggestion isn't to use lenses to horizontally stretch the image being projected.
It's not irrelevant. In fact it's quite important to understand the origins of anamorphic projection.

Incidentally, the "luxury" of using optics to stretch and recompose an anamorphic image is one of the best ways of achieving a scope screen with maximum panel resolution retained for the home user too. What's your point?

I have taken great length to point out the three principle methods of achieving a scope screen and their advantages so that the uninitiated reader appreciates how each differs.

The way you've decided to respond in such a condescending way as well is just embarrassing and undermines the rest of what you're saying.
I may have been over zealous in the face of what appeared to me to read as the inability to grasp the advantages of a maximised 2.40:1 image, and for that I apologise.

You're really conforming to the audiophile stereotypes recently. I don't know how anyone would think that setting up your projector so that you don't see or use half the pixels is a sensible suggestion.
Well you seem to be driven by this idea that ever pixel must count. You're concentrating on entirely the wrong things. You should be thinking about the impact of the image. This brings me to your next statement...


It's no different to masking a 16:9 TV to 2.40 and then scalling 16:9 media to fit the height of the mask.
My dear fellow, it's entirely different. Just step out of the obsession with resolution and consider picture size and source quality for a while.

Your example of the TV misses one crucial factor in relation to the discussion about nightrider1470's solution: Optical zoom.

Masking the TV is no different than running a projector with a 16:9 projection screen. In that situation you are dealing with a CIW system. So really there's absolutely no benefit to creating a windowed 16:9 image inside the 2.40:1 ribbon. The pictures in that scenario are getting smaller. So your TV example really shows that you haven't understood the concept.

What we want is a bigger image, not a smaller one. But it is being done in a very specific way. If you want to use a TV example then it' should really be the Philips 21:9 screen.



What we are doing with the scope screen is something very similar. We are taking an already large 16:9 image and we are adding extra space to the left and right. We are growing the projection screen horizontally. We are doing this because it matches the prime source. It gives the largest viewing experience when playing media that needs, and craves, and deserves the wow factor of a very large screen.

The solutions others have proposed is basically "get a bigger 16:9 screen". But that only works to a point.

So we start with the traditional average size 16:9 screen and the problem that 2.40:1 just looks lost.



So let's say that the owner's objective is to fill the width of the room with a very large image from his 2.40:1 films. Everyone else here is saying "get a bigger screen". Well let's have a look how that would pan out....



Do you see the problems now? The room is now dominated by a huge screen. There's acres of unused screen surface above and below the 2.40:1 image. This saps perceived contrast. There's also considerations about existing equipment getting in the way of the projected image. So changes to the screen then could mean changes to the audio gear too. What happens if you have very nice floorstander speakers. Are you prepared to downgrade? Over all it's not a good solution really.

Now look what happens if we keep the same image height as the 16:9 screen, but go for something wider....



This is very close to how it would be for nightrider1470. The 2.35- and 2.40:1 images are framed correctly now. The image has maximum impact. There's a trade-off with resolution for 16:9 stuff, but it's still better than our previous 720p projector and that's okay until we can upgrade to a projector with lens memories. In the meantime our very clever scaler does a superb job of rescaling 1080p, 1080i, 576p, 576i and any gaming resolutions in to the available 1422x800 pixel space. Happy days.


On what planet is 1920x1080 smaller than 1920x800? I don't think it's caged that's having issues with understanding...
What, on the same panel without a scaler? Of course they're not. That's not what I have been saying.

But when you add a scaler, and then rescale a 1920x1080 resolution image down to a 1422x800 pixel window, then that's your 1080p image displayed inside a 2.40:1 ribbon. The resolution is different, just as it is when that image is displayed on a 720p projector or a 768p HD Ready TV, but the source is still 1080p. I truly hope this puts all matters to bed because I'm getting very tired and bored of explaining this.
 
Yes it does, but it's not the restriction you believe.

The point was that it was *a* restriction, and it seemed you were unwilling to accept that it was a restriction.

For a good 10+ years we have had home cinema projectors operating at 1280x720. We have HD ready TVs operating at 1366x768. All are capable of displaying a perfectly proportioned 1080p image, albeit at a lower resolution. Further more, if you owned a 720p projector then that's the resolution at which you'd be watching your full frame 16:9 1080p images. Letterboxed Blu-rays display at a lower resolution: 1280x533 pixels

This is all well and good but it's irrelevant when we're talking about not utilising the available pixels.

The example should be about not utilising a 720P projector's full pixel count, as this is the argument.

Now, you tell me...have 720p projectors suddenly stop working with 1080p sources?

Do owners of 720p projectors and 768 HD Ready TVs find Blu-ray completely unwatchable?

None of these examples were made, so you're responding to things no one said again.

It's different when you don't have the available resolution in the first place, than it is having the resolution there and opting not to use it.



What 16:9 media exactly?

It entirely depends on what you watch, I watch a lot more TV series than movies so the vast majority of my content is 16:9, I even have a fair amount of movies in 16:9 too.

You seem to think I have an issue with 2.40:1, I don't, I think a screen at 2.40:1 looks great, that's not really my argument though.


It's not irrelevant. In fact it's quite important to understand the origins of anamorphic projection.

I do understand the origins of anamorphic projection, but I don't think this is the issue that's really at hand here.

Incidentally, the "luxury" of using optics to stretch and recompose an anamorphic image is one of the best ways of achieving a scope screen with maximum panel resolution retained for the home user too. What's your point?

My point is that using an anamorphic lens is significantly better than the method you proposed, ignoring the costs.

I was simply stating that caged was saying that the trade-offs you were suggesting were not worth having a 2.40:1 screen.

I have taken great length to point out the three principle methods of achieving a scope screen and their advantages so that the uninitiated reader appreciates how each differs.

I may have been over zealous in the face of what appeared to me to read as the inability to grasp the advantages of a maximised 2.40:1 image, and for that I apologise.

You have chosen to go to those lengths because you were assuming we weren't understanding you because we were pointing out that those trade offs weren't worth it.


Well you seem to be driven by this idea that ever pixel must count. You're concentrating on entirely the wrong things. You should be thinking about the impact of the image. This brings me to your next statement...

I'm not driven, I simply like to maximise the resolution on a display that I have for the best image quality. I wouldn't like to trade off one for the other, I'd be buying a 1920x1080 projector to make use of its pixel count.


My dear fellow, it's entirely different. Just step out of the obsession with resolution and consider picture size and source quality for a while.

It's not an obsession with resolution, it's making full use of something I've paid for. I don't see your solution as an acceptable trade off. 1920x1080 is low enough as it is when projected, never mind on a 24" monitor.

Your example of the TV misses one crucial factor in relation to the discussion about nightrider1470's solution: Optical zoom.

Masking the TV is no different than running a projector with a 16:9 projection screen. In that situation you are dealing with a CIW system. So really there's absolutely no benefit to creating a windowed 16:9 image inside the 2.40:1 ribbon. The pictures in that scenario are getting smaller. So your TV example really shows that you haven't understood the concept.

I have understood it, you seemingly don't like my response to it so are claiming I don't understand. I understand perfectly well, this is not an issue at all.

My TV example IS the same because you are making a choice to crop the available image down to fit an ultra wide aspect ratio and then cropping all further content to fit in to that small cropped space. As I've said, I've been saying that it isn't really a good solution.

What we want is a bigger image, not a smaller one. But it is being done in a very specific way. If you want to use a TV example then it' should really be the Philips 21:9
I understand what you're saying, and no the Phillips 21:9 TV is not valid in this example, because the projectors being discussed are 16:9.

Your example would work if we're talking about an ultra wide projector, like one with a 2560x1080 display, but because we're not it's not really valid.

The difference is that the image size is constrained by the display's pixel count. If you aren't using all the available pixels, then you're not using the largest image available.

It's not an obsession with pixels but a clear understanding that if you aren't using the whole of something, you're not getting full use out of what is available. It's a rather simple concept.

You are talking about area of picture basically, but a 2.40:1 image is not giving you the largest area of picture coverage on a 16:9 display,

What we are doing with the scope screen is something very similar. We are taking an already large 16:9 image and we are adding extra space to the left and right. We are growing the projection screen horizontally. We are doing this because it matches the prime source. It gives the largest viewing experience when playing media that needs, and craves, and deserves the wow factor of a very large screen.

The issue under contention is that it's quite a compromise, but you're taking the fact that people are objecting to that being a good solution as them not understanding

The solutions others have proposed is basically "get a bigger 16:9 screen". But that only works to a point.

So we start with the traditional average size 16:9 screen and the problem that 2.40:1 just looks lost.

Can you define what "looks lost" actually means? Why not use simple to the point terms? Such as "I'd prefer the image to be bigger".

This is what I was referring to in the other thread when I was commenting on the terminology audiophiles like to use, a lot of it just seems unnecessary.




So let's say that the owner's objective is to fill the width of the room with a very large image from his 2.40:1 films. Everyone else here is saying "get a bigger screen". Well let's have a look how that would pan out....


Do you see the problems now? The room is now dominated by a huge screen. There's acres of unused screen surface above and below the 2.40:1 image. This saps perceived contrast. There's also considerations about existing equipment getting in the way of the projected image. So changes to the screen then could mean changes to the audio gear too. What happens if you have very nice floorstander speakers. Are you prepared to downgrade? Over all it's not a good solution really.

Now look what happens if we keep the same image height as the 16:9 screen, but go for something wider....

Both the 16:9 and 2.40:1 images are the same width and take up the same amount of horizontal space. The difference isn't so huge that one will "dominate" whilst the other doesn't.

Additionally, why not simply have the screen at 16:9 filling the width and mask it to 2.40:1 for ultra wide content, with masks you also have the luxury of being able to mask 16:9 down to any other aspect ratio with the minimum of fuss.

With masking being so easy, I am very confused as to why anyone would go for your solution unless they ONLY watched 2.40:1 content.

This is very close to how it would be for nightrider1470. The 2.35- and 2.40:1 images are framed correctly now. The image has maximum impact. There's a trade-off with resolution for 16:9 stuff, but it's still better than our previous 720p projector and that's okay until we can upgrade to a projector with lens memories. In the meantime our very clever scaler does a superb job of rescaling 1080p, 1080i, 576p, 576i and any gaming resolutions in to the available 1422x800 pixel space. Happy days.


What, on the same panel without a scaler? Of course they're not. That's not what I have been saying.

As above, masking makes more sense, is cheaper and is less fuss, as well as I mentioned before, 1920x1080 is quite a low resolution anyway on a massive screen, so why you'd advocate making it even less JUST for 2.40:1 content doesn't make much sense.

But when you add a scaler, and then rescale a 1920x1080 resolution image down to a 1422x800 pixel window, then that's your 1080p image displayed inside a 2.40:1 ribbon. The resolution is different, just as it is when that image is displayed on a 720p projector or a 768p HD Ready TV, but the source is still 1080p. I truly hope this puts all matters to bed because I'm getting very tired and bored of explaining this.

Again, as above. Additionally, it's not putting matters to bed, your stance seems to be anyone who understands the concept will not have an issue with it, so anyone that has an issue with it doesn't understand.

You also say we're fixating on resolution, but it seems you've undermined yourself as you keep mentioning it, as per your arguments it's all about image size and ratio, so it should be 16:9 being scaled down, not 1080P, no?

So before you respond, we ALL understand it, so please don't attempt to explain it again with increasingly elaborate picture demonstrations.
 
Well that's all cleared up nicely...... :confused:

I was going to ask a slightly sarcastic question about how to watch The Dark Knight bluray... but I think it may make heads explode. :D
 
It's quite simple. You get your 2.35:1 screen and start watching the movie, then when the 16:9 scenes appear you hit the button to downscale them to fit the height of the 2.35:1 screen and slide your masks in. Then when it goes back to 2.35:1 you zoom in a bit and add masks to the top and bottom of the image. When the next 16:9 scene that comes up you downscale that a bit more and slide the masks a bit closer together. Then about halfway through you pause to go and fetch some binoculars and move your seats closer. ;)
 
The point was that it was *a* restriction, and it seemed you were unwilling to accept that it was a restriction.
Nit picking much?

This is all well and good but it's irrelevant when we're talking about not utilising the available pixels.

The example should be about not utilising a 720P projector's full pixel count, as this is the argument.
Sorry, are you really suggesting you want to drive all 1920x1080 pixels all the time regardless of the AR of the image?

The 720p projector example is there to demonstrate that we have been quite happy with a 1280x720 panel resolution in the past, both pre and post the arrival of Blu-ray. i.e. we watched at a lower resolution than the proposed 1422x800, so is that really such a hardship?

It entirely depends on what you watch, I watch a lot more TV series than movies so the vast majority of my content is 16:9, I even have a fair amount of movies in 16:9 too.
Fine. Don't have a 2.40:1 screen then. What's your issue. It's not meant for people like you. Move along. But don't try to deny a solution to others where it fits their needs. You are not them. Go on your way.

My point is that using an anamorphic lens is significantly better than the method you proposed, ignoring the costs.
It's not disputed that an anamorphic lens is better... and it never has been disputed either!!

So shall I message nightrider1470 that you'll be paying for his anamorphic lens or do you want the pleasure?

Quite seriously though, arguing a non-disputed point and completely ignoring the financial implications of your position vis-a-vis the OP isn't very sensible, is it? We are here to offer practical solutions.

I was simply stating that caged was saying that the trade-offs you were suggesting were not worth having a 2.40:1 screen.
Well I presume since you're making the statement that you also share the opinion.....and it's just that..."Your opinion". That's not an opinion shared by nightrider1470, and that's what counts.



You have chosen to go to those lengths because you were assuming we weren't understanding you because we were pointing out that those trade offs weren't worth it.
Once again, your opinion and not one shared by nightrider1470.

I'm not driven, I simply like to maximise the resolution on a display that I have for the best image quality. I wouldn't like to trade off one for the other, I'd be buying a 1920x1080 projector to make use of its pixel count.
See above point about 2.40:1 with a scaler not being for you. Next!!

It's not an obsession with resolution, it's making full use of something I've paid for. I don't see your solution as an acceptable trade off. 1920x1080 is low enough as it is when projected, never mind on a 24" monitor.
Oh okay, so you watch TV and movies on your widescreen TV and always have it set to zoom do you? Just so you can "make full use of something you've paid for.". Nice :rolleyes:



I have understood it, you seemingly don't like my response to it so are claiming I don't understand. I understand perfectly well, this is not an issue at all.

My TV example IS the same because you are making a choice to crop the available image down to fit an ultra wide aspect ratio and then cropping all further content to fit in to that small cropped space. As I've said, I've been saying that it isn't really a good solution.

I understand what you're saying, and no the Phillips 21:9 TV is not valid in this example, because the projectors being discussed are 16:9.

Your example would work if we're talking about an ultra wide projector, like one with a 2560x1080 display, but because we're not it's not really valid.

The difference is that the image size is constrained by the display's pixel count. If you aren't using all the available pixels, then you're not using the largest image available.

It's not an obsession with pixels but a clear understanding that if you aren't using the whole of something, you're not getting full use out of what is available. It's a rather simple concept.
Ah it's becoming clear now. You're one of those people that can't understand why there's black bars on your TV picture. I can just hear your cries now "I've paid for this TV and I'll be damned if any director is going to tell me how to watch his movie!". Yes, a simple concept indeed. You carry on with with your TV in zoom mode. I'm sure you'll be very happy.

You are talking about area of picture basically, but a 2.40:1 image is not giving you the largest area of picture coverage on a 16:9 display,
Oh for the love of God.

Come on then. How exactly do you propose to display a 1920x800 image using all the resolution of your 1920x1080 pixel panel when you have just a projector and a scaler?

I'm dying to hear this.

The issue under contention is that it's quite a compromise, but you're taking the fact that people are objecting to that being a good solution as them not understanding
So, give us your solution then. Remember, you have only a scaler and a projector, and a bigger 16:9 screen is not an option. It has to be a 2.40:1 screen. What's your answer?

Can you define what "looks lost" actually means? Why not use simple to the point terms? Such as "I'd prefer the image to be bigger".

This is what I was referring to in the other thread when I was commenting on the terminology audiophiles like to use, a lot of it just seems unnecessary.
"Looks lost" is not a technical term. It's a common phrase used in the English language. You're just trying to be argumentative.

Both the 16:9 and 2.40:1 images are the same width and take up the same amount of horizontal space. The difference isn't so huge that one will "dominate" whilst the other doesn't.

Additionally, why not simply have the screen at 16:9 filling the width and mask it to 2.40:1 for ultra wide content, with masks you also have the luxury of being able to mask 16:9 down to any other aspect ratio with the minimum of fuss.

With masking being so easy, I am very confused as to why anyone would go for your solution unless they ONLY watched 2.40:1 content.
Right then...once again... let's see your costed solution.

As above, masking makes more sense, is cheaper and is less fuss, as well as I mentioned before, 1920x1080 is quite a low resolution anyway on a massive screen, so why you'd advocate making it even less JUST for 2.40:1 content doesn't make much sense.
Cheaper than what exactly? nightrider1470 owns the projector, he owns the scaler, he owns the material to make his 2.40:1 screen.

The extra outlay required to make his 'scope screen solution with projector and scaler is £0. There's no money required at all. Nothing. So your solution is cheaper than nothing, is it? How do you work that out; are you going to pay him to implement your idea then? Do tell as I'm fascinated how you intend to dig yourself out of this hole ....LMAO

Again, as above. Additionally, it's not putting matters to bed, your stance seems to be anyone who understands the concept will not have an issue with it, so anyone that has an issue with it doesn't understand.
Nowhere in this thread have I said this is a solution for everyone. Time and time again I have pointed out that this is the most appropriate solution for someone in nightrider1470's position. There's no argument from me that there are better solutions for achieving a CIH system with a scope screen. The rub is they all cost money. Extra spending isn't an option in this case. So what are you going to do? Answer: make the best solution from what's available. This is a point you all seem to be missing.

I was questioned how this would work. It's in the previous posts. People couldn't grasp how the 2.40:1 image would be the biggest and how 16:9 would fit inside that. So it appeared clear to me from what others wrote that they couldn't grasp the concept.

As I've said before, if you can show a better way of having a scope screen and accommodating all different aspect ratios without further spending then do tell us all. If not, then with respect, shut up.
 
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I honestly didn't notice the aspect ratio changed until someone pointed it out. Which is pretty much the highest praise you can give something like that.

Although I'm assuming in the film prints it gets narrower when it shifts to 16:9 instead of taller.
 
Nit picking much?
No you needed it explaining to you as you were consistently misunderstanding (seemingly on purpose) what was being said.

Sorry, are you really suggesting you want to drive all 1920x1080 pixels all the time regardless of the AR of the image?

Sorry for what? No I'm not suggesting that. I'm saying that it's absurd to limit a display in such a way that everything but 2.40:1 content is compromised.

The 720p projector example is there to demonstrate that we have been quite happy with a 1280x720 panel resolution in the past, both pre and post the arrival of Blu-ray. i.e. we watched at a lower resolution than the proposed 1422x800, so is that really such a hardship?

What is this "we" you keep speaking of?

Fine. Don't have a 2.40:1 screen then. What's your issue. It's not meant for people like you. Move along. But don't try to deny a solution to others where it fits their needs. You are not them. Go on your way.

My "issue" is that you were having what looked like a really hard time understanding any objection to your proposed solution, and took the choice to respond to any criticism of it as people simply not understanding the concept.

It's not disputed that an anamorphic lens is better... and it never has been disputed either!!

I didn't say it had either. You have a really hard time understanding points that aren't in agreement with you. Seemingly another audiophile stereotype.

So shall I message nightrider1470 that you'll be paying for his anamorphic lens or do you want the pleasure?

Oh yes, that's exactly what I suggested. Or maybe I was pointing out that your situation is an odd compromise and that having a constant image height solution would be all well and good if you had the luxury of using an anamorphic lens.

Quite seriously though, arguing a non-disputed point and completely ignoring the financial implications of your position vis-a-vis the OP isn't very sensible, is it? We are here to offer practical solutions.

Arguing a non-disputed point is exactly what you have been doing for most of this thread with caged, you have consistently responded to points he never made, you are even doing it now to me whilst claiming I've done it to you. This is getting a bit creepy now.

Well I presume since you're making the statement that you also share the opinion.....and it's just that..."Your opinion". That's not an opinion shared by nightrider1470, and that's what counts.

Yeah, no. I was explaining what was being said, as you were again responding to things that hadn't been said. I was explaining to you what caged's points were about.

Once again, your opinion and not one shared by nightrider1470.

As above, since you were struggling so much understanding what was being said, you needed it explaining to you.

See above point about 2.40:1 with a scaler not being for you. Next!!

And again, I was explaining something you were refusing to understand.

Oh okay, so you watch TV and movies on your widescreen TV and always have it set to zoom do you? Just so you can "make full use of something you've paid for.". Nice :rolleyes:

Why are you responding to things I haven't said? Are you the emperor of logical fallacies or something?

Ah it's becoming clear now. You're one of those people that can't understand why there's black bars on your TV picture. I can just hear your cries now "I've paid for this TV and I'll be damned if any director is going to tell me how to watch his movie!". Yes, a simple concept indeed. You carry on with with your TV in zoom mode. I'm sure you'll be very happy.

Why can't I understand this exactly? My TV is in zoom mode? What did I say about responding to things people haven't said?

Oh for the love of God.

Come on then. How exactly do you propose to display a 1920x800 image using all the resolution of your 1920x1080 pixel panel when you have just a projector and a scaler?

I'm dying to hear this.

It seems you are misunderstanding on purpose now. We are talking about 16:9 displays, you mentioned that 2.40:1 screens are to get the largest image possible, and that caged had to get it out of his head that 16:9 was the largest possible screen size.

16:9 IS the largest possible screen size on a display that can only output at 16:9.

2.40:1 is NOT the largest screen size (in area) because no matter how big a 2.4:1 image is (on a 16:9 display), a 16:9 image is going to be larger in overall area at the same width.

How are you misunderstanding this?

So, give us your solution then. Remember, you have only a scaler and a projector, and a bigger 16:9 screen is not an option. It has to be a 2.40:1 screen. What's your answer?

Again, as I've had to explain already, you were struggling with not misunderstanding caged's points. So I reinforced them. I'm not telling the OP what to do, I was presenting a reinforcement of what caged's points were and simply stating that I agreed that the compromise is bizarre.

"Looks lost" is not a technical term. It's a common phrase used in the English language. You're just trying to be argumentative.

Nope, I'm pointing out that you're using terms that don't really mean anything to describe something.

Saying it looks lost doesn't mean anything at all because it doesn't "look" as if it's "lost".

Right then...once again... let's see your costed solution.

It's pointless doing a costed solution, I'm not telling the OP what to do, but you already know this.

For the sake of argument though, it's not worth doing a costed soloution anyway as it'd be extremely cheap to make masks anyway with basic materials and a trip to a fabric shop.

Cheaper than what exactly? nightrider1470 owns the projector, he owns the scaler, he owns the material to make his 2.40:1 screen.

As above, I'm not telling him what to do, the argument was that the scaling method and prioritising 2.40:1 doesn't make much sense when masking would be a better solution and cheaper than buying a scaler.

The extra outlay required to make his 'scope screen solution with projector and scaler is £0. There's no money required at all. Nothing. So your solution is cheaper than nothing, is it? How do you work that out; are you going to pay him to implement your idea then? Do tell as I'm fascinated how you intend to dig yourself out of this hole ....LMAO

As above.


Nowhere in this thread have I said this is a solution for everyone. Time and time again I have pointed out that this is the most appropriate solution for someone in nightrider1470's position. There's no argument from me that there are better solutions for achieving a CIH system with a scope screen. The rub is they all cost money. Extra spending isn't an option in this case. So what are you going to do? Answer: make the best solution from what's available. This is a point you all seem to be missing.

Conversely, caged made a point about how it's an odd way to set up a screen and to prioritise 2.40:1, in which the debate furthered on from there.

I was questioned how this would work. It's in the previous posts. People couldn't grasp how the 2.40:1 image would be the biggest and how 16:9 would fit inside that. So it appeared clear to me from what others wrote that they couldn't grasp the concept.

This is the crux of the issue. You seemingly cannot comprehend how anyone would think that the concept you proposed of using a constant image height was a good one, so that anyone who questioned it must be questioning it simply because they don't understand it.

You've done this in other debates too, asserted that anyone who disagrees with concepts your are proposing, only disagree because they don't understand.

These aren't highly complicated concepts that people struggle to understand, in fact it's actually extremely basic. It's just your attitude of "well they couldn't possibly disagree with me because I'm so right, they must instead not understand what I am saying".

The fact that you very quickly started being sarcastic and condescending shows that was your attitude and viewpoint.

As I've said before, if you can show a better way of having a scope screen and accommodating all different aspect ratios without further spending then do tell us all. If not, then with respect, shut up.

Oh lawd, now you're getting aggressive. Is this how you deal with people who present alternative views to your own?

You already know I've told you that I'm not telling the OP what to do and that we were discussing the merits of the solutions, in that starting from scratch, the masking solution would look the best, as you aren't compromising on image quality of everything but 2.40:1 content to achieve a nice looking screen.
 
I honestly didn't notice the aspect ratio changed until someone pointed it out. Which is pretty much the highest praise you can give something like that.

Although I'm assuming in the film prints it gets narrower when it shifts to 16:9 instead of taller.

Nope, it's taller. I went to see the Dark Knight Rises at the cinema, the IMAX footage was all in 16:9, and the projected image height increased for those scenes, and then decreased for non-IMAX footage. So in effect it was actually constant screen width.
 
Sorry for what? No I'm not suggesting that. I'm saying that it's absurd to limit a display in such a way that everything but 2.40:1 content is compromised.
"Sorry" wasn't an apology but an expression or incredulity at your rather absurd suggestion. I'm glad you've seen sense and recanted.

What is this "we" you keep speaking of?
The countless thousands of people, myself included, who have bought and used 720p projectors for home cinema. Two points arising then....
1) do you actually own a home cinema projector?
2) do you speak to real people and understand how language works in the real world or are you just a keyboard warrior?

My "issue" is that you were having what looked like a really hard time understanding any objection to your proposed solution, and took the choice to respond to any criticism of it as people simply not understanding the concept.
Well, when every objection included or implied an impractical solution, are you really surprised I rejected them?

* Use a larger screen
* Buy a different projector
* buy an anamorphic lens

...hardly great ideas when there's no money in the kitty to pay for them.

It's the real world. People work with what they. It's called "being pragmatic".

I didn't say it had either. You have a really hard time understanding points that aren't in agreement with you. Seemingly another audiophile stereotype.
You're just going round in circles.

Oh yes, that's exactly what I suggested. Or maybe I was pointing out that your situation is an odd compromise and that having a constant image height solution would be all well and good if you had the luxury of using an anamorphic lens.
How many more times does it need pointing out? He has what he has, and that's that.


I'm bored of this. Let's just cut to the chase. What are your costed solutions? Let's look through your remaining diatribe to see if there's anything of substance.

Ah, here we go....

It's pointless doing a costed solution, I'm not telling the OP what to do, but you already know this.

For the sake of argument though, it's not worth doing a costed soloution anyway as it'd be extremely cheap to make masks anyway with basic materials and a trip to a fabric shop.

So in short, the answer is no. You can't offer anything concrete; just pointless rhetoric. It's exactly as I predicted. You have dug a hole for yourself and now you can't get out.

What you've said above demonstrates to me that you have no real-world experience of the practical problems of horizontal masking on large screens. Fabric alone is not enough.

Let's see what other "gems" of advice you have to give

As above, I'm not telling him what to do, the argument was that the scaling method and prioritising 2.40:1 doesn't make much sense when masking would be a better solution and cheaper than buying a scaler.
Pay attention. He already owns the scaler. :rolleyes:

It seems you are misunderstanding on purpose now. We are talking about 16:9 displays, you mentioned that 2.40:1 screens are to get the largest image possible, and that caged had to get it out of his head that 16:9 was the largest possible screen size.

16:9 IS the largest possible screen size on a display that can only output at 16:9.

2.40:1 is NOT the largest screen size (in area) because no matter how big a 2.4:1 image is (on a 16:9 display), a 16:9 image is going to be larger in overall area at the same width.

How are you misunderstanding this?
You're the one that is confused. You're forgetting that projectors illuminate a projection surface. The shape and size of that surface is independent of the shape of the projector's imaging panel. If you understand the significance of this then it becomes obvious why everything I have said about scope projection holds true. Everything you've said so far demonstrates to me that most of your experience is with TVs.


Time and time again you've said you're not telling nightrider1470 what to do. But the irony is that you are. He is already set on a course to go for a 2.40:1 screen, and whether you or anyone else in this thread doesn't like it is frankly irrelevant. What he needs is practical advice to make the best of the equipment he already owns. The fact is that none of you have offered any pragmatic alternatives. You're all about as useful as a bunch of onlookers watching a man drowning and complaining loudly about the style of his stroke.
 
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I'll tell you how to do the maths and then you can do calculations on any screen width you want.

The aspect ratio of the screen is 2.40:1 That means for every 2.40 inches of width means 1 inch of height. So you're using the times button or the divide button on your calculator.

Screen width divided by 2.40 = screen height.

Convert feet in to inches first to make things simple. So our original 9ft wide 2.40:1 cinema screen measures 108" from side to side. 108"/2.40 = 45"


I believe you're overthinking the whole zoom/aspect/Lumagen thing. It's really quite straightforward if you follow my steps.


1) Get a DVD or Blu-ray disc that is 16:9 i.e. it fills the entire screen area of your TV when the TV is set to 16:9 mode. Try a Pixar animation. They're nearly always 16:9 on the disc. Now go find a film that is 2.40:1

2) Put your projector where it's going to be installed. Set the ZOOM to the BIGGEST picture size. Play that 16:9 DVD/Blu-ray DIRECT into the projector and make sure the projector is on 16:9 mode. DO NOT go via the Lumagen at this stage.

The image you have projecting on to the wall is the biggest image your projector can make. The WIDTH of this image is the WIDTH of your 2.40:1 screen. Mark out the left and right image edges with some tape.



3) Swap the disc for the 2.40:1 film. The image should still fill the width between the tape marks, but it won't be as tall. This is your 2.40:1 screen height. (shown in the diagram by the black outline) if you want to mark the top and bottom edges with tape then go ahead.



If you left your setup like this then any 16:9 or 1.85:1 film would overspill the top and bottom edges of your screen. But you're not going to do that because you have a Lumagen scaler. You'll only use the full area of the screen for letterboxed Blu-rays and DVDs (or rips), so your image will look like this...



4) Now wire in the Lumagen. Play the 16:9 movie again. Set a custom aspect ratio in the Lumagen so that the 16:9 movie fills the height of the screen. The aspect ratio of the film as projected needs to be 16 units of width to 9 units of height. Measure the image height. Divide that figure by 9, and then multiply by 16. This tells you how wide the image should be. If the Lumagen has individual controls for width and height then you can adjust the width so it meets the correct size.



You need do nothing with the projector when playing movies and TV. Just switch the Lumagen between it's standard setting which is what you'll use for letterbox (2.35 or 2.40) movies, and the custom ratio for 16:9 movies and TV.

Thanks for your guide! :)

Wouldn't it just be easier to project a 2.40.1 BD movie at max zoom, measure it and make it?

Confused why I need to measure a 16.9 movie first?

:)!!!
 
If you feel comfortable doing that then go for it.

Personally I'd measure the width but double check the height with a calculation (width/2.40 = height). This is because the matting on films can vary slightly from what's advertised on the box. :)
 
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