>each time one opens, possibly modifies and saves a JPEG back to the file more of the image data > gets thrown away.
Not my understanding. The loss of data only occurs on the resaving. You can open a JPEG as many times as you want and not loose data as long as you don't resave it. FWIW - I've never done an objective study, but the few times I've resaved a JPEG, I've never been able to notice any degradation in image quality. Kenneth Waller ----- Original Message ----- From: "Leon Mlakar" <[EMAIL PROTECTED]> Subject: RE: RAW v JPEG > > > >As a long-time user of the TIFF format for somewhat unrelated > >purposes, I feel most inclined to comment on this note: > > > > Tiffs don't have any of the post-processing advantages of RAW > > > >Which is obviously untrue, since TIFF (unlike JPEG) won't > >usually compress data by throwing actual image data away, and > >also has the capability of storing 12 bits-per-channel (well, > >actually, it will have to be be 0-padded 16-bit, but...) > > > > And there's one more thing people tend to forget - each time one opens, > possibly modifies and saves a JPEG back to the file more of the image data > gets thrown away. Even with high quality JPEGs these things do accumulate > ... > > Cheers, > > Leon >
