HP LP2475w, IPS 24" Official Thread! (Now Available from OcUK)

Now that it's a bit darker at my office I can actually see the invisible 1 even using safari or IE. However it is VERY VERY VERY faint. I almost have to bob my head from side to side to spot it. The slightest reflection or any more ambient light in this room will make it impossible to spot. Not even sure if I could see it if I didn't knew it was there. If someone said the numbers start at 2, I'd believe them. If I move the window it becomes more obvious though. Makes me think I'm having a hard time to see shades as dark as that 1.

It's interesting how the shade of the 1 when using the colour picker in GIMP is #020202 w/o colour managed GIMP. And with colour management it's #090909. shouldn't it be the same colour, only the monitor shows that specific colour with a different value with colour management? Also while it IS visible w/o colour management in Safari and IE it is not at all visible in GIMP, w/o colour management. Doesn't matter how stupid I make myself look bobbing my head from side to side :D It's just not there.

Strange how non-colour managed applications can be so different.
 
Yep. I know exactly what you mean. If you try really hard (and bob the head about a bit, of course), you can just about make it out in certain apps. Even on the monitor's full brightness/contrast it's hard to tell if it's just your imagination. On my other screens, it's faint, but still easily recognisable from a distance. The default settings for the LP2475w are certainly not normal, and we shouldn't have to resort to PC apps (like Nvidia Control Panel, or LUT Manager) to correct this.

I've worked the problem out at least, but only have a tentative solution at best. It's simply that the DVI, HDMI and VGA inputs are automatically set up by HP to use a "Limited" RGB mode (values 16-235), which nulifies values 0-16 and 235-255. If you switch to a YPbPr signal, via the PS3 during Blu-Ray playback for example, the picture is perfect. Similarly, using the LP2475w's component input for anything resolves this, because it too forces YPbPr.

So, here are two possible ways to correct this:

1: Find a way to make the PC GPU output in YPbPr. I'm not even sure this is feasible.
2. Alter the DVI parameters in the monitor's service menu (if there is one accessible to users) to allow for a full RGB spectrum, or lower black levels. An equivalent option on an HDTV would be labeled "RGB: Full or Limited", or "HDMI Black Level".
 
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Sorry, I'm at the risk of sound like a pedant at this point but...

How well does this monitor display 1920x1080 via DVI for everyone else?

I'm getting... disturbing results for what should be a 1:1 fit. The native 1920x1200 resolution looks exactly as you'd expect, but when I change to 1920x1080 the image quality seems to go horribly awry. For starters, all the text starts to shadow over itself, making it cluttered and quite literally unreadable, while all the colours become intensely saturated. Changing between aspect and 1:1 modes doesn't help.

I'm running F/W GIG052, just for reference. Does anybody else see this?
 
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cataferal said:
Sorry, I'm at the risk of sound like a pedant at this point but...

How well does this monitor display 1920x1080 via DVI for everyone else?

I'm getting... disturbing results for what should be a 1:1 fit. The native 1920x1200 resolution looks exactly as you'd expect, but when I change to 1920x1080 the image quality seems to go horribly awry. For starters, all the text starts to shadow over itself, making it cluttered and quite literally unreadable, while all the colours become intensely saturated. Changing between aspect and 1:1 modes doesn't help.

I'm running F/W GIG052, just for reference. Does anybody else see this?
Click to expand...

Does the 1080p image happen to stretch out over the whole display area? If yes, then that's why you're getting shadowish text. There should be black borders at the top and bottom if it scales to the correct ratio. I think you can set this up in the menu of the monitor.

EDIT: nvm I kinda missed that you actually did try 1:1 ratio.. sorry! :D Are you trying 1080p from the computer's gfx card or some console btw?
 
Straight from the PC graphics card (9800GTX) via DVI. It doesn't matter whether I set it up so that the GPU scales the image, or the monitor. Nor does it matter if the monitor's set to 1:1 or aspect modes. Changing resolution to 1920x1080 (say, for a performance boost in a game) always results in:

-Jumbled text
-Saturated colours

Most strange. I take it you're not experiencing this?
 
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cataferal said:
Straight from the PC graphics card (9800GTX) via DVI. It doesn't matter whether I set it up so that the GPU scales the image, or the monitor. Nor does it matter if the monitor's set to 1:1 or aspect modes. Changing resolution to 1920x1080 (say, for a performance boost in a game) always results in:

-Jumbled text
-Saturated colours

Most strange. I take it you're not experiencing this?
Click to expand...

I just tried it, and you're right. It looks horrible! However, there is a simple fix, and the reason it works is because I believe the graphics card starts to send analog RGB signals over the DVI interface (it got pins for that as well). Why? I don't know but image control in the monitors menu suddenly becomes available which only is available when having an analog source afaik. If you set the sharpness level to 1 (softest possible) text and everything will become a lot sharper (lol?) This also explains the slight difference in colour levels.

EDIT: I'm also using an nvidia card btw, in case that's the cause.
 
Actually, the "Image Control" option opens whenever the resolution is anything besides native 1920x1200. The Analog RGB notion could well be true though. The only way to be absolutely sure would be to use a DVI-D cable (as opposed to I variation, which carries both signals).
 
cataferal said:
Actually, the "Image Control" option opens whenever the resolution is anything besides native 1920x1200. The Analog RGB notion could well be true though. The only way to be absolutely sure would be to use a DVI-D cable (as opposed to I variation, which carries both signals).
Click to expand...

Strange. I don't get image control when I set non native resolutions, except 1920x1080 that's the only time it's not grayed out. It's not even active at 800x600. I have my graphics card set to use monitor's scaling.
 
Yep. I've just re-checked every resolution, and it's definitely available for anything between 800x400 and 1920x1080. If everything's set up correctly in the Nvidia Control Panel, the monitor should give you rights to Sharpness and Custom Scaling options.
 
I've noticed it has a problem with 1:1 mapping via the component input. When given a 1920x1080 signal it displays it with not only a black border top and bottom as you would expect to pad it out to 1200 vertically, but also vertical borders left and right about 1cm in width.

Now the mapping appears to be correct, ie it's not scaling the image to fit into that reduced width, it's merely cropping the pixels outside the window it displays. This is using the Xbox360 btw. I've compared it using the VGA cable, and the difference is clear.

My only thought was that the 360 is deliberately cropping the output to account for overscan on some TVs, since the assumption would be that a component output is going to a TV not a monitor, but even so it seems an odd thing to do.
 
Nothing like this at all here. I've set the 360 to 1080p via component, and there are no black borders at either side. It looks exactly the same as the VGA connection, regardless of which scaling mode I use (Aspect, 1:1 or Full).

Firmware is GIG052.
 
Interesting. I guess something was fixed in the later firmware, since mine is GIG045. It's slightly annoying but I don't know if it's worth getting it swapped.

For those that have returned a monitor to HP directly, is it much effort, and does it take long?
 
I've sent two back to HP in my time. It's fairly hassle free, since they pay for collection. You just need to send their store department an email (or ring business tech support, if you want a refurb) outlining any problems you have.
 
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Is there any guarantee they can supply a particular firmware version? Given that I ordered this less than 30 days ago, I would have expected the latest firmware.

I'm rather concerned they will just ship me any old unit as a replacement and I could end up with the same or an even earlier firmware version.
 
That's possible.

It's best to ring HP business tech support and ask. They'll tell you honestly if you can vie for a latter-day firmware version, and give you an indication of whether it'll change anything.
 
Well HP are sending a replacement out, so I can try it before mine goes back, or I can return the replacement if it turns out to be no better. Can't really fault them for service in that case.
 
Well the replacement arrived this morning. Excellent service really. The replacement has GIG068 firmware, and it cures the component input cropping.

A slight imperfection in the panel, seems more like dirt on the back, rather than a stuck pixel, since it's a faint and fuzzy grey on a white background.

I think I can put up with that in order to cure the cropping problem though.
 
That's good news. I have one such "speck" on another monitor. It's less of a concern than any dead pixel could be, so I kept it. A far lesser evil than that cropping issue.
 
I've just got my monitor. Hardware version GIG111 and FW version GIG045.
Made in February 2009 in Czech.

I couldn't be happier with my choice. I was very worried about all the problems I had read about here and other forums but I can't see anything wrong at all with this one.

I've tried to look for the tint issue but can't see it. I've looked and then looked again for dead or stuck pixels but the panel is perfect!

My previous monitor was a Dell 2007WFP and this one is in a different league. The Dell has some backlight bleeding issues and 2 dead pixels.

At work I'm using the new Dell 2408WFP which is very nice as well but if I had to choose I would take the HP anyday.

Now just bring on tomorrow! The parts for my new build will be arriving!! :D
 
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