Images that were originally saved in photoshop 6 and than opened in photoshop cs, on the same computer, appear the same on the monitor but the values in the info pallette are very different especially the cmyk values. It seems to affect grayscale and duotone images more than color images. When I open the images back up in photoshop 6 the values are back to what they originally were.
what's going on
#1
Set US PREPRESS DEFAULTS in Color Settings (command+shift+k), then honor the embedded profile (or image> mode> assign (the correct) profile)
At that point everything should be under control...
My guess
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http://www.gballard.net/psd/honormyembeddedprofile.html>
#2
also, confirm both PSs are using the same MonitorRGB:
Color Settings (command+shift+k)> Working Spaces: RGB Click on RGB and note the Monitor RGB - "profile" that is the enabled monitor profile
#3
The only way that you can get different values is if there was a color conversion that took place. Monitor and working space profile can not change any pixel values on their own. They can, however affect how the images previews on your screen Are you sure that you don't have your preferences set to "Convert to Working Space" automatically?
#4