Photoshop CS5: Wrong Colors with OpenGL in Preview for "Convert to profile" dialog

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  • Updated 6 years ago
Prerequisites: Windows 7 64 Bit, 64 Bit PS CS5 (Version 12.1 x64), a monitor profile installed that is different from sRGB (the effect seems to be more pronounced with larger gamuts). Photoshop with OpenGL enabled, modes "normal" or "extended".

Load a JPEG with embedded sRGB profile into Photoshop (don't convert to different color space if photoshop should be configured that way for opening).

Now open the "convert to profile" dialog and set it to convert the existing sRGB to new color space also sRGB.

Expected result: Because of the same source- and destination space, there should be no difference in tone and color when the preview checkbox is enabled. When hitting "OK", the image should not change for the same reason.

Actual result: When the preview checkbox is enabled, colors and tone are shifting (darker and more reddish on my system). When hitting "OK" while preview is enabled, the wrong color and tone disappears and the image is displayed correctly again (i.e. no difference to before).

The problem reproducibly does not occur if OpenGL is switched off or OpenGL mode is set to "simple" (i.e. no color calculations via OpenGL). The problem does not occur when converting to a *different* color space or when the monitor profile is set to sRGB or is very similar to sRGB.

Note: The problem is not severe, because it seems to affect the preview only, but it may point to some underlying problem in the OpenGL handling. The same problem occurs when making a softproof to sRGB for an sRGB document (which is also not severe, because it would not make much sense): As long as the proof is active, colors and tone are shifted in the same way as in the "convert to profile" dialog's preview. And in the same way, it does not occur when switching OpenGL off or setting it to "simple".

Edit: Additional Information: NVIDIA GeForce GT 520 (Zotac Zone), 1600x1200 DVI, one Monitor, calibrated using Spyder3, Graphics card Driver from NVIDIA, Version 296.10 (= current).
Photo of LRuserXY


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Posted 6 years ago

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