CompuServe Messages

#DPI Question

    17-Jun-94 11:42:06
Sb: #108272-#DPI Question
Fm: Yost Group 76702,413
To: DAN SPOMER 72650,3573
As I recall, you posted this same message awhile back. You say that PhotoShop says the image is 2048×1536 at 72 DPI while PhotoStyler says it's 2048×1536 at 1 DPI. Sounds like one of those two packages is mistaken. I just saved four renderings of the same image as TIFF color/compressed, color/uncompressed, mono/compressed, and mono/uncompressed, and then loaded them into Altamira Composer, Picture Publisher, and Photo Finish. All reported them correctly as 512×486 resolution. I once had PhotoStyler, but am no longer using it. The darkening you report is, I suspect, because of their Kodak "Precision" color system. As near as I could figure from playing around with it, the Kodak system makes certain assumptions regarding gamma and adjusts the incoming images, whether you want it to or not. I believe this is the same with the Kodak PhotoCD images, that contain embedded gamma values. I spent more time than I wanted attempted to nullify the effect in PhotoStyler. Unfortunately, their documentation avoids mentioning "gamma" in connection with the Kodak color system. Probably someone in the marketing dept. at Kodak felt it would be over the heads of the customers. <g> – Jack