On Thu, 24 Feb 2005, Tom C wrote: > Recently I've noticed substantial (by that I mean someone as careless as > myself can notice and do a double take) color shifts when I save images as > .jpgs using the 'Save for Web' feature. I don't see the color shifts when I > create a .jpg using 'Save As'. I've also seen changes in tonality when > saving gray scale images with 'Save for Web'. > > I'm wondering if anyone knows the reason why. I don't ever recall seeing > this happen prior to this version.
I have noticed it in earlier versions as well, and I suppose it's something intrinsic to the "save for web" function. Embedding of some colour profile may be one answer (since this colour shift appears different in different web browsers) or it may just be that the function tries to remap colours to make the jpeg compression more efficient or something. I never use the function myself, and don't see any reason to. What does it give me that an ordinary "save" doesn't? Last month, I bought some illustrations to a web site I work on. The background of the site is a very light blue, and I wanted the illustrations to have the same background colour. But since the artist used "save for web," the background colour was slightly different on different computers (Win2000, WinXP, MacOSX, MacOS9). He had so re-save using the ordinary "save" in order to make the background colour correct. anders ------------------------- http://anders.hultman.nu/ med dagens bild och allt!
