In a message dated 17/2/03 10:00:06 AM,shangarasingh.com writes: << Open a TIFF, flatten it, dupe it, save it as a full quality JPEG and include the same profile as the TIFF, close the JPEG (I don't think that last step is necessary but I would do it, just in case) and open it again. Drag it into the TIFF's window. Set the blend mode to Difference. If all you see is black, then there's no difference in quality. If you see some stray pixels, they're the ones that have been affected in the conversion. You can also run the pointer over the window and watch the Info palette to see which, if any, pixels have changed values. >>
Dear Shangara Just tried it. Blend> difference showed no change on a two time compression. But, I can see the difference clearly on the screen. I can see the jpeg artifacts. In my experience if I can see it so can other people. Bob Croxford =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
