I previously wrote ... > It is my understanding PS will not introduce more artifacts IFF the RGB > data is not altered in any way ... as if PS has a method for applying the > exact JPEG quality to unaltered data. An experiment would therefore be > interesting: > > (1) create a copy of the JPEG file. > (2) open the copy ... assign AdobeRGB, add copyright and save. > (3) compare file sizes > (4) verify RGB loss by comparinging both images as "differenced layers"
I performed this experiment on a 1200x1600 HQ JPEG from my camera (681kb). The file size after was a mysterious 472kb, and a comparison (via layers) implied absolutely no difference(?) ... weird! cheerios ... shAf :o) Avalon Peninsula, Newfoundland www.micro-investigations.com (in progress) =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
