Testing different prices HDMI cables. Suggestions welcome, results will be published here.

[RimBlock]

In all honesty if you're testing the cable you basically need to check the signal going in one end if the same coming out the other end, no need for complicated setups or anything, you simply want to eletrically check the signal going in is the the one that comes out the end.

Again I have been unclear.

I would like to test the difference different cables make to me with my equipment in my home environment. It is for my interest sake and I was suggesting posting the results here.

Taking a photo of the screen proves nothing. I'm pretty sure if you take the same photo 5 seconds later and compare it to the previous one it will show colour differences in the image.

Thanks, that sounds like a good idea. I presume from what you typed that you have not actually tried it and you are guessing.

Instead of becoming obsessed with trying to prove a difference why don't you save the time and watch a film.

Refer to my first reply to your post. Want to test , my home, my equip, happy to post results. No obsession about it. The only obsession I can see is the number of people who have jumped up trying to convince me not to even try. Seriously, what are you guys afraid of if I do this test and post the results. Why are you so dead set on me not doing it.

If someone else posted this then I would be interested, would read the results and add my own research and come to my own conclusions. Are you all worried that others here cannot do the same.

People, you seem to be taking this so seriously. It is unlikely to debunk all your scientific beliefs. Be cool. i believe I say a picture difference with two different cables and just want to see them again to see if I was mistaken or not. As someone suggested, one of the cables may not have supported deep colour and have a lower bandwidth. That may also explain the differences.

[sigh] well it seems most people here are against someone trying something or more likely, about someone publishing the results.

Pug, you are so right. Don't mess with a guys woman, car, shed or hifi. Some people seem to get very touchy (not is a good way).

RB

 

[RimBlock]

RB, whilst the camera is indeed a good one, the camera may meter off a different part of the screen and adjust accordingly, so you couldnt guarantee that the same cables picture will be the same more than once - its just how photography is i'm afraid, and a long exposure wouldnt help with that.

imo, if i were you, i'd do the test, and use your subjective opinion. The results will only be valid for you, but will be more accurate for you. To do that subjectively, imo, you'll need someone changing the cables and you just witnessing the picture. I dont even think youcould grade out of 10 - i think you need a list of things to check, and go with a general "feeling" without knowing the brand of cable being used...

That said, i thought everyone knew HDMI quality mattered over length. As for using CAT5/6, well i think we're wandering into the realm of specialist here, and this isnt something the average joe who drops cash on these things is going to investigate.

Do the comparison, but do it for yourself i guess is my point.

Considering the other posts here it seems that others have no interest even for interests sake.

I understand your concerns about the cameras metering but the 5D is a Pro camera and can be set manually. Fully manual. i used to do some portrait photography and still do every now and then with studio flash and ran a thread on AvForums in the photography section. I will try and get decent shots but if for some reason it is not possible then 'so be it'.

I will make the results available for anyone who whats to view them. Would be interesting to see how all the people claiming that the testing method is very flawed and pointless would react if all the photos from the different cables turned out the same but the results from using an older version HDMI cable turned out differently. .

Cheers
RB

 

[cavemanoc]

Would love to see the results mate - certainly can't hurt and will make for an interesting discussion. If people find no merit in your method or results, then they are perfectly at liberty to discount them and can find another thread to comment on. I always enjoy a bit of home-brew science and think it should be encouraged whenever possible.

Look forward to some nice side by side shots - I take it you will be using a still image for the comparison - if so can it be something pretty to looks at please

 

[RimBlock]

Would love to see the results mate - certainly can't hurt and will make for an interesting discussion. If people find no merit in your method or results, then they are perfectly at liberty to discount them and can find another thread to comment on. I always enjoy a bit of home-brew science and think it should be encouraged whenever possible.

Look forward to some nice side by side shots - I take it you will be using a still image for the comparison - if so can it be something pretty to looks at please

Thanks mate.

My thoughts exactly. Don't like and have no interest then move on. Don't really need people denouncing everything and in some cases being borderline insulting.

I am taking a few comparison shots now with my cable and equipment leaving a few minutes between shots to see what the integrity is like if nothing changes. Not sure when the cables will be delivered but will try to find at least some decently curvy examples .... now where is Serenity, Austin Powers, Stardust etc .

RB

 

[Demon]

Thanks for your input.

And yet proposing to see if there are any differences has you pointing fingers about rouge traders. You seem to very much dislike the idea of me even looking at this. If all cables are the same then why would the change cause a resolution change or a colour depth change ??. What you seem to be saying is that if there is any evidence however subjective of any picture quality change for whatever reason then I am lying and changing to analogue cables. If that is what you believe then there is little I can do to stop you. If you are right, and I have no reason to believe you are not, then all it will do is prove what you say so it seems strange to have such a strong reaction to a suggest of a basic test. I guess some people are very passionate about these things.

Why ? when it would cost me around 150 for that lot and my expensive cable was 180. One cable, no converters less hassle for an extra 30 quid.

Who ever said I don't. [sigh]... have you never wanted to do something for yourself rather than relying on other people tests in lab conditions.

And you gained that experience by trying for yourself. Yet you are so strongly protesting that I shouldn't bother or is it just the suggestion of providing the results of me trying that upsets you ?. Why can others not be allowed to do what you have done or are you just trying to protect the poor innocent forumers ?

Oh well, never mind.

RB

Our motivation is the polar opposite of your insinuation..

We understand the science and technicalities more then enough and some of us have plenty of experience in this field to know your whole basis for testing and why you want to test is futile.

It's not that it's some amazingly complex science and we are taking all labs tests done on blind faith, it's more that the science is very easy to understand if you have experience of digital signals, and your explanation of what you 'experienced', while we may believe that your eyes saw a difference, we all know the obvious truth that you where either misled by them or your own pre-conceptions.

This subject has been talked about many times on many forums, and occasionally people with the necessary equipment have just pandered to the obvious throng of people that still believe that HDMI cables can affect picture quality as you describe, and have done the lab tests to try and educate those left who still are misunderstanding things. In fact 100% of tests done all prove HDMI cheap and expensive cables give the same picture quality, there is not a single test that proves otherwise..

We are talking the basics of digital signals here, it's like coming on here and swearing that your 700W PSU makes your PC so much quicker then your old 550W PSU, because you once saw it in a shop, and hence why it's garnering such responses..

Oh, and HDMI extenders are £26.23 inc vat, that's both ends, all you supply is the CAT6 cable... Hence why I suggest if going over 5-10M, it's a far cheaper option.. (The extenders are on a competitors site, but a well know computer e-tailer)

 

[Fr0dders]

Hi,

A bit of background info. I recently bought a projector (Epsom 3500), screen and hdmi cable (16 meter). When demoing the setup I saw a distinct difference in picture quality of the two HDMI cables.

The common belief is that this is not possible.

the common belief is that is not possible over short distances

16m isn't a short distance.

Over long distances, the cable can exhibit poor quality, but this will show up as an obvious fault in the picture, rather than any subtle "improvements" in the picture.

Heres a more detailed explanation

http://www.eurogamer.net/articles/digitalfoundry-vs-hdmi

 

[Demon]

If you are hellbent on this (and each to their own I guess)..

Can I suggest that you use a PC connected via HDMI (A DVI to HDMI converter is cheap and reliable if your video card only supports this), and there are several Home Cinema 'test screens' that would show in a more ready fashion any drop in resolution or drop in colour depth etc..

Although you need to be aware that Anti-aliasing filters in your camera will introduce some artefacts, so you may struggle to take a clean pixel level image unless you optically zoom right in on the affected area.

Of course you won't find anything to photo, except some sparklies at worse, but you wanted people to be more understanding..

 

[Johnnytoxic]

Things like colours, image saturation cannot be affected by different cables. You need to read how the HDMI interface works to understand this.

Source - PS3
Destination - TV

The signal is analogue as it travels across the cable, with voltages etc etc.

The signal which is received by your TV will do it's error correction and convert these analogue signals into digital.

You have an image and part of that is the binary value

1 0 0 1 0

Now a cheap HDMI cable may deliver the following analogue signal. Round this up like your TV and this will deliver the exact same binary number.

0.7 / 0.2 / 0.2 / 0.8 / 0.1 == 1 0 0 1 0

An expensive cable will give you the following.

0.9 / 0.1 / 0.1 / 0.9 / 0.1 == 1 0 0 1 0


I hope this makes it easier to understand.

 

[-Ad-]

Refer to my first reply to your post. Want to test , my home, my equip, happy to post results. No obsession about it. The only obsession I can see is the number of people who have jumped up trying to convince me not to even try. Seriously, what are you guys afraid of if I do this test and post the results. Why are you so dead set on me not doing it.

RB

We are advising you to not waste your time, that is it.

Afraid of ????????

Go ahead and crack on with it, but when you post your results back prepare for the barrage of criticism of certain criteria, techniques and variables that will drastically affect these results pretty much useless in the grand scheme of 'HDMi PQ difference between cables'.

 

[RimBlock]

Our motivation is the polar opposite of your insinuation..

We understand the science and technicalities more then enough and some of us have plenty of experience in this field to know your whole basis for testing and why you want to test is futile.

It's not that it's some amazingly complex science and we are taking all labs tests done on blind faith, it's more that the science is very easy to understand if you have experience of digital signals, and your explanation of what you 'experienced', while we may believe that your eyes saw a difference, we all know the obvious truth that you where either misled by them or your own pre-conceptions.

This subject has been talked about many times on many forums, and occasionally people with the necessary equipment have just pandered to the obvious throng of people that still believe that HDMI cables can affect picture quality as you describe, and have done the lab tests to try and educate those left who still are misunderstanding things. In fact 100% of tests done all prove HDMI cheap and expensive cables give the same picture quality, there is not a single test that proves otherwise..

Thanks for the clarity. You original post came over, to me at least, in such a way that prompted the 'insinuation'.

We are talking the basics of digital signals here, it's like coming on here and swearing that your 700W PSU makes your PC so much quicker then your old 550W PSU, because you once saw it in a shop, and hence why it's garnering such responses..

No, not really. What I am suggesting is that the higher rated PSU will stop issues with the hard drives due to the lack of power supplied when used in a machine with this particular video card. The thing that people seem not to get to grips with is that I am looking at the affect on the whole chain and not just the cable. To test just the cable then you clearly need to remove anything else. I am looking to see the difference in the output when I change different cables.

Oh, and HDMI extenders are £26.23 inc vat, that's both ends, all you supply is the CAT6 cable... Hence why I suggest if going over 5-10M, it's a far cheaper option.. (The extenders are on a competitors site, but a well know computer e-tailer)

Yeah, you are aware I am not living in the UK right ?? Pricing is based, for me, on finding a retailer who ships here (many int he UK do not like Overclockers) postage and import duty costs including the costs of the cables connecting to the extenders against local very expensive costs here.

RB

 

[RimBlock]

the common belief is that is not possible over short distances

16m isn't a short distance.

Over long distances, the cable can exhibit poor quality, but this will show up as an obvious fault in the picture, rather than any subtle "improvements" in the picture.

Heres a more detailed explanation

http://www.eurogamer.net/articles/digitalfoundry-vs-hdmi

Yes, that is where the common belief was taken from. Unfortunately it seem quite a few people hold this belief to be true for any HDMI cable of any length as exhibited by various replies.

RB

 

[Stuff]

QR

I'd highly doubt there would be a noticeable difference between a £1 cable from Poundland (Yes, they sell them there) or a £75 cable from Comet.

 

[RimBlock]

If you are hellbent on this (and each to their own I guess)..

Yeah, not that hellbent, just got an opportunity to try them out so why not. IT seems from this side that there are a lot of people hellbent on talking me out of even making the effort. If the results are to be as everyone is saying then why don't I just try and prove everyone right.... It is no skin off my nose and will take little effort on my part, just an afternoon.

Can I suggest that you use a PC connected via HDMI (A DVI to HDMI converter is cheap and reliable if your video card only supports this), and there are several Home Cinema 'test screens' that would show in a more ready fashion any drop in resolution or drop in colour depth etc..

Sure although the PC is in the study and the projector is in the living room. Moving the PC would be a pain but not completely impossible.

Although you need to be aware that Anti-aliasing filters in your camera will introduce some artefacts, so you may struggle to take a clean pixel level image unless you optically zoom right in on the affected area.

Sure although if the pictures are all the same then surely the same anti-aliasing will be applied. If there are differences seen, which everyone believes is impossible, then I would tend to agree that it will be hard to accurately show them with certainty that the difference is purely due to the change in the chain (source, cable, destination).

Of course you won't find anything to photo, except some sparklies at worse, but you wanted people to be more understanding..

So if one cable were to support deep colour and the other wouldn't then the pictures would be the same still ? If one cable could maintain a higher resolution and the other couldn't then the picture would be exactly the same ?. You quite clearly claimed that it would earlier but now are saying there will be no difference.

If the cables were of the same HDMI spec then I would see no reason why the picture should be different apart from the sparkles mentioned. If the cables were not of the same spec then there should be a difference. I would have thought that a cable of a lesser spec would be cheaper than a cable of a higher spec.

When I tested the cables I was not told the spec of the cable with the poorer picture and would image it did not support deep colour or higher resolutions. If by buying a cable of a higher HDMI spec for more money meant that I was conned by the shop then I guess that is the case.

The point is I do not know for sure without taking a look at the cables and if they are offered then I may as well take a look at some others as well.

RB

 

[RimBlock]

Things like colours, image saturation cannot be affected by different cables. You need to read how the HDMI interface works to understand this.

Source - PS3
Destination - TV

The signal is analogue as it travels across the cable, with voltages etc etc.

The signal which is received by your TV will do it's error correction and convert these analogue signals into digital.

You have an image and part of that is the binary value

1 0 0 1 0

Now a cheap HDMI cable may deliver the following analogue signal. Round this up like your TV and this will deliver the exact same binary number.

0.7 / 0.2 / 0.2 / 0.8 / 0.1 == 1 0 0 1 0

An expensive cable will give you the following.

0.9 / 0.1 / 0.1 / 0.9 / 0.1 == 1 0 0 1 0


I hope this makes it easier to understand.

Yes I do understand but what may be the case for the demo I went to is that the two cables may not have been of the same HDMI spec. The one that supported HDMI 1.4 (or whatever the new name is now) may have been, shock horror, more expensive. If this is the case then wouldn't the picture be different due to lack of deep colour support or a difference in resolution compared to the cheaper cable ?

Everyone seems to assume that all HDMI cables are of the same spec with the same abilities and are getting lost in this. Demon clearly stated reasons that a picture may change in his first post but everyone still states that HDMI cables cannot affect colour or sharpness ever.....That just seems like a blanket statement like "HDMI just works or it doesn't" which is quite simply not true.

RB

 

[RimBlock]

We are advising you to not waste your time, that is it.

Afraid of ????????

But the point i that it is my time to waste, my opportunity to try and get some more experience. It is not that people are advising me not to waste my time it is that they are being very forceful about it which is what I have been quite puzzled about.

Go ahead and crack on with it, but when you post your results back prepare for the barrage of criticism of certain criteria, techniques and variables that will drastically affect these results pretty much useless in the grand scheme of 'HDMi PQ difference between cables'.

Maybe but this is, as cavemanoc put it, a bit of home brew science. Something we used to be quite well known for in the UK. It is a bit of fun and it not based on proper scientific testing methods. If I see a difference in the picture after swapping cables and am able to record that difference in my setup then, to me, the cable has prompted a change in the picture.
The reason for the change be it because of a resolution change, some strange side effect in the projector, the go faster stripes on the cable or the fact that the magical pixes have been offered a bonus if they push the electricity dust faster down the cable is immaterial to me as a consumer. All I want to know is which cable gives the better picture in a given setup and is the price difference justified, to me, given the improvement over the next best cable down.

If I was to see a change in the picture and then wanted to know why the change occured then I would clearly need more stringent investigation.

It is probably also worth noting that cables are also usually designed for different environments. Just like someone saying that FTP/STP network cable is pointless as it provides no real advantage. This is clearly incorrect but it takes a certain environment in order to see those advantages.

I do find it hard to understand the 'you got ripped off' merchants. If they were given the choice of two cables which showed different quality of picture and the one that had the better quality (for what ever reason) was more expensive, why would I be ripped off for getting the cable producing the better quality. Saying I was ripped off over price compared to the price in the UK I would have to agree with just like the UK prices are a rip-off of the prices available in the US for a lot of things. Being give the choice of two cables of the same HDMI spec which showed no picture improvements and paying for the more expensive one would have course seem to be pointless.

I think I will put a short post to clarify these pints in a short and concise way, which I am sure people will find hard to believe if they have read my posts on other subjects .

RB

 

[RimBlock]

In an attempt to clarify my position a little especially considering that there have been some good info posted here I will put it in hopefully a short post so people can jump straight to it rather than trawling through all the other posts.

I bought a projector and saw two HDMI cables connected to it. One seemed to produce a much nicer picture to my eyes. This cable was more expensive. These two cables were the only two available in the 16 meter length I needed. Cat6 HDMI extenders were an option but worked out close to the same price and would need to be imported causing issues if they became faulty or were DOA.

It has been suggested that the two cables may have been of different HDMI specs. This is quite possible in my opinion but I do not know for sure. The cheaper could have been of a lower HDMI spec than the more expensive. The more expensive which I purchased is the Audioquest Cinnamon.

With the majority of people saying all HDMI cables are the same and produce the same results I just wanted to see if my mind was playing tricks on me or if there was a difference in the picture especially with many people telling me it is not possible regardless.

I arranged to borrow the other cable from the retailer and he agreed to lend me some other cables as well so I could see the effect they have on my setup from a consumers point of view.

I believe that the differences will be due to different spec'd cables which seems the most logical reason especially with the clarity provided by some here and with other research. I believe that most people spouting the "it's not possible to change quality of the picture" have not taken in to account this possibility even though Demon has stated it could be the reason (one or two others also mentioned this). If things go the way it is expected then it will be more of a "Differences in the results of cables capable of different HDMI specs which also cost different prices". I would suggest it be taken as that for now, I cannot confirm the cable specs until I get the cables, rather than a differences in the same spec'd HDMI cables which cost different prices as most people seem to have taken it as. My mistake for not clearly stating that I did not know the specs of the cheaper cable although most people seem to have jumped to the conclusion that they must have been the same and of course some just love spouting the 'your got ripped off' without bothering to understand the whole situation. The cheapest HDMI cable I can remember seeing here would be 10 quid closer to 17 if you take in to account average earnings etc) and although we do not have Asda, Tesco or any of the other supermarket cum department stores here either there are Tescos in Bangkok which is only a two hour flight away. Bit much for a cheap HDMI cable though .

Anyway, enough for now.

RB

 

[RimBlock]

Ok, a slight update.

I put the camera up and took some shots from a single scene of Casino Royale.

After lining up the camera I took some shots from the paused picture (played through the A.C.Ryan HD Mini) over a time period of around 30 minutes to see if the image would remain consistent. As I finished at midnight, I have not yet looked at the pictures but they should give a reasonable indication if the camera and player can maintain the same captured image even if nothing has changed (physical setup wise). If the pictures are notably different then that of course blows the ability to capture images out of the water and I will only be able to provide a subjective view of my observations.

Tonight is the eve of the Chinese New Year so I will over with my wifes family for the reunion dinner. I will take a look at the pictures if I get a chance. If not then will look tomorrow as the next two days are a national holiday here.

RB

RB

 

[kylew]

I do find it hard to understand the 'you got ripped off' merchants. If they were given the choice of two cables which showed different quality of picture and the one that had the better quality (for what ever reason) was more expensive, why would I be ripped off for getting the cable producing the better quality. Saying I was ripped off over price compared to the price in the UK I would have to agree with just like the UK prices are a rip-off of the prices available in the US for a lot of things. Being give the choice of two cables of the same HDMI spec which showed no picture improvements and paying for the more expensive one would have course seem to be pointless.

I think I will put a short post to clarify these pints in a short and concise way, which I am sure people will find hard to believe if they have read my posts on other subjects .

RB

Because they shown you what they want to see, or rather, you saw what they wanted you to see. The differences you saw mean that they were conning you, they either weren't comparing two HDMI cables, and one will have been analogue, or they've been playing around with the settings, they could have had the PS3 connected to another screen, and while changing cables, changed the settings on the PS3 or something.

I know you were talking about longer runs of cables, but it's still HDMI, an inadequate run of HDMI will present errors such as sparklies and artifacts (corruption). The reason people are telling you not to bother is because, even if you believe you can see a difference between HDMI cables, there won't be, because it's not how it works. We know that the "bushes are sharper on one cable than the others, with a bit more colour saturation" is your mind playing tricks on you. As I mentioned in the other thread, controlled testing backs it up, with hash tests done on the outputs of various different HDMI cables, and all of them matched up with the same hash on the output files. The length of the cable is irrelevant to the image quality (sparklies/snow aren't bad image quality, it's simply an incomplete corrupt image). The physical difference with longer cables is simply to ensure the signal gets transmitted all the way down the cable and comes out the other end, intact, which is determined by things like cable gauge and length, which can have an effect on inductance, capacitance and resistance, and that's basically it.

I think this is what you're struggling with. Factually, HDMI cables don't work in the way you're describing them to, it's not subjective, opinion or anything like that, they simply don't work like that. HDMI realistically isn't any different to the likes of USB and network cabling, and when you look at it like that, and you understand that with digital, you either an identical output of what was input the other end, or an output that has been corrupted to some degree, be that completely, for a garbled image, or only mildly, with a few bright pixels.

Think of how absurd it would be to suggest one USB cable, used for a USB drive with movies on it, produced a better picture when playing them back on your PC, than another USB cable, based on the price. There is nothing you can do to a cable used to carry a digital signal, that enhances the data going through it.

 

[RimBlock]

Because they shown you what they want to see, or rather, you saw what they wanted you to see. The differences you saw mean that they were conning you, they either weren't comparing two HDMI cables, and one will have been analogue, or they've been playing around with the settings, they could have had the PS3 connected to another screen, and while changing cables, changed the settings on the PS3 or something.

Or maybe they were beaming pixie dust in to my eyes and altering my brain waves as I was not wearing my tin foil hat . Sorry, couldn't resist but the fact is that only one cable was provided, it was HDMI as the projector was right next to me so I can see him plugging it in and out. I was told this cable will be good enough for most people at this level, done deal. I specifically asked for a comparison with a more expensive cable and we are not talking about hundreds of pounds expensive here, and saw a difference in quality. I believe the more expensive cable is HDMI 1.4 (or whatever they changed the name too) and the other cable was probably not supporting deep colour or able to maintain the higher bitrate at that length. If the retailer had offered the choice of the two cables and both were HDMI 1.4 then I would agree that there is a chance that there was some foul play going on but that was not the way it happened. The retailer though it was all a done deal with the cheaper cable. Again the 'Ripped off ' crowd (not including you here Kyle) don't know the full picture and just jump to the 'your an idiot and got ripped off' mantra.

I know you were talking about longer runs of cables, but it's still HDMI, an inadequate run of HDMI will present errors such as sparklies and artifacts (corruption). The reason people are telling you not to bother is because, even if you believe you can see a difference between HDMI cables, there won't be, because it's not how it works.

So cables with different HDMI specifications (1.2 vs 1.4 for example) will not affect the picture quality ?

I think this is what you're struggling with. Factually, HDMI cables don't work in the way you're describing them to, it's not subjective, opinion or anything like that, they simply don't work like that. HDMI realistically isn't any different to the likes of USB and network cabling, and when you look at it like that, and you understand that with digital, you either an identical output of what was input the other end, or an output that has been corrupted to some degree, be that completely, for a garbled image, or only mildly, with a few bright pixels.

Think of how absurd it would be to suggest one USB cable, used for a USB drive with movies on it, produced a better picture when playing them back on your PC, than another USB cable, based on the price. There is nothing you can do to a cable used to carry a digital signal, that enhances the data going through it.

Yes and I agree. What people do not seem to get past is that the cables may be of different HDMI standards. One might will have supported deep colour and the other may not. The one supporting should have exhibited better colour saturation should it not ? It is therefore like comparing USB 1.1 and USB2 cables and not USB2 and USB2 but more expensive.

RB

 

[RimBlock]

Just to highlight that there are different HDMI standards (versions) and catagories....

Taken from www.hdmi.org.

Q. What is the difference between a “Standard” HDMI cable and a “High-Speed” HDMI cable?
Recently, HDMI Licensing, LLC announced that cables would be tested as Standard or High-Speed cables.

• Standard (or “category 1”) HDMI cables have been tested to perform at speeds of 75Mhz or up to 2.25Gbps, which is the equivalent of a 720p/1080i signal.
• High Speed (or “category 2”) HDMI cables have been tested to perform at speeds of 340Mhz or up to 10.2Gbps, which is the highest bandwidth currently available over an HDMI cable and can successfully handle 1080p signals including those at increased color depths and/or increased refresh rates from the Source. High-Speed cables are also able to accommodate higher resolution displays, such as WQXGA cinema monitors (resolution of 2560 x 1600).

So it would be reasonable to assume the cheaper cable I saw was a category 1 and the more expensive was a category 2 or do people still believe that there is no difference in the picture between cables manufactured to these two different categories ?.

RB