ATI GPU image quality just looks better! But why?

Without relating to the validity of your claim, you might want to compare adapters from more or less the same generation.

 

Or the subjective perception of a test group with a sample size which is 1 so far (but c'mon B3D, here's a chance to testify!).

 

True. 7900GT/8800GTX -> 4870. Improved color representation and image clarity right out of the box. With NV I had to calibrate the sharpness and colors in the NVCP.

 

Dave is that you...

 

I know a professional photographer, who says, that Radeons at default have more accurate colours, than anything what he can get out of GeForce even with custom tweaks in CP (so he use only Radeon cards no matter if they are fater or slower in 3D).

I don't know, what's the cause of the IQ, but the engineer, who is responsible for that, does his job right

 

Photos, or it didn't happen.

Seriously. Get a decent SLR (Canon/Nikon), a decent macro lens (a *macro* lens, not a lens with a macro setting), and a tripod. Shoot RAW, convert to TIFF/PNG, crop hard and post the results.

 

There is a big difference between accurate and "looks good". You're never going to be able to find some concrete answer for why you think something looks better. It's all subjective, just stick with what you like.

 

the point is a bit moot now as most people use dvi

 

Not only that, but some "subjective" testing of various audio compression schemes that I did on this forum a few months back shows that accurate != preferable.

I can't imagine it being any different for video.

 

Sorry, this is nonsense. How can you judge per-pixel image quality by using a tool, which is based upon low-pass optical filter and bayer mask, which creates 2/3 of color information by digital interpolations? (while the rest completely process by several algorithms reducing aliasing, noise, changing levels, dynamic range and other imperfections of CMOS/CCD)

Davros: There is difference in colours even when using DVI. I don't know what the two companies do in a different way, but the difference in colours is mentioned persistently and often by people, who works as photographers, designers, ets. so definately not fanboys.

 

^

Foveon X3 to the rescue!



Anyway the Chiphell guys were particular on pre-G80 nVidia adapters in 2D. Before the F word is thrown around, seems like the whole issue was resolved post G80. The 2D display engine being completely virtualized in R600+ chips has an effect on this, too?

 

It would be nice though don't you think if folks could make at least *some* attempt to document and demonstrate what they say they think they're seeing? Obviously this isn't possible for all elements of the image quality discussion (particularly colour-related), but for things like ghosting and glows it's not *that* hard.

But if someone is claiming for example "oh, my 40" Samsung HDTV seems to show a sort of halo/glow/smearing effect around text even when I'm using HDMI, here's a photo I took to try to demonstrate it..."



Obviously I've had to de-focus a little to avoid resolving the individual colour elements, but I think the effect is pretty clear to see, especially if you stand back and/or use averted viewing.

 

Foveon is good for capturing per-pixel detail and per-pixel colour information, but because of the specific approach, sensitivity of the 3 colour layers isn't identical (their curves are anything, but aligned and a lot of corrections are applied, too) - so I don't thing DSLRs are optimal tools for measuring of colour accuracy

 

Well there's no denying that GFFX - GF7 were deficient in the 3D quality. But for 2D, I don't think I've ever seen a difference when dealing with DVI. Even VGA output from modern mid/high-end cards is great. If you look at IGPs or cheap cards, VGA can get ugly because the signal quality wasn't a big concern but DVI still works great.

 

Reminds me of years ago when, in 3d games, of course, my 3dfx card would display proper oranges and reds so that you could discern the difference between the two colors, whereas my TNT displayed orange and red as red, on the same monitor. In fact, at first I thought there was something wrong with the 3dfx card until I realized that there was no orange to see on the TNT display-just red! I tinkered with the TNT's color controls and alleviated it to some degree, but then doing so threw off other colors in the display.

 

Do you have ClearType fonts enabled?