2000.12.18 00:02 "Re: Stripes in thumbnail", by Joris Van Damme
A little PS about the grayscale->cmyk convertion... If you plan to be working on a limited grayscale subset (256 or even 65536 grayscale values, for example), you probably want to set up a grayscale->cmyk lut. If that is the case, maybe I can save you some time by sending you the lut you're after. Just drop me a line stating the exact number of scales you need, and the photoshop cmyk sceme you prefer. And while you're dropping me that mail, reward my efforts with a bunch of exotic tiff testfiles if you have any.
One other thing, in case you do dig into these .ast files... the photoshop SDK docs probably don't mention it (can't remember, but it seems likely), but adobe cmyk is the exact opposite of tiff cmyk: 0 means full ink in adobe cmyk, no ink in tiff cmyk.