Camera Raw in CS3 Beta Color Issue
Camera Raw in CS3 Beta Color Issue
- Subject: Camera Raw in CS3 Beta Color Issue
- From: Rick Gordon <email@hidden>
- Date: Thu, 4 Jan 2007 16:19:15 -0800
in the Photoshop CS3 Beta, one has the option of either opening JPEGs directly or through the Camera Raw interface.
I just noticed a slight inconsistency between the images when opened one way as opposed to the other.
1) I turned off the "Prefer Camera Raw for JPEG files" option, opened a JPEG from a Canon 20D set to meta-tag the image for sRGB, closed the original, and saved off a copy. The file opened tagged as an sRGB file (as expected).
2) I turned on the "Prefer Camera Raw for JPEG files" option, and opened the same file into Camera Raw, and passed it through at default settings (all settings set to 0), with sRGB as the working space and 8-bit set in the workflow options.
3) I copied image #2 and pasted it into image #1, and set the layer blending mode to Difference.
4) The result was that any random pixel would show a variance of 0 to 2 levels on the R, G, and B channels. Relatively few pixels would show no variance at all (R=0, G=0, B=0).
I know that this would be considered a relatively minor variance, but why, under the circumstances described, would there not be an identical result in both workflows?
It also seems odd that there is no explicit means of determining whether Camera Raw has honored the profile meta tag or the embedded profile, although I assume it would, but there's no way to second-guess it.
On a different, but slightly related note, I have read that PS CS3 can also open TIFFs through the Camera Raw interface, but I have not found any way to do so. Was that ability removed from the public beta, or is there some secret I'm missing?
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RICK GORDON
EMERALD VALLEY GRAPHICS AND CONSULTING
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WWW: http://www.shelterpub.com
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