Archived posting to the Leica Users Group, 2006/11/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]On Nov 4, 2006, at 9:31 AM, Leonard Taupier wrote: > Elegantly put, Harrison. > > Now to address Walts scanning comments. We both use the same > scanner and shoot the same color film. I have always scanned to > tiff on both color slides and bw negatives. I have recently > experimented with scanning Velvia to jpg. I can't find any > difference at all in the printed output of either file. Also when > editing I always save as a level 12 jpg unless I'm mailing a file. > There is a huge difference in the file sizes. The tiff is 55 MB > versus 15 MB for the jpg. Am i missing something? In my experience, no, you're not. The main difference between a 12 jpeg image and tif is that iterative saves will always degrade a jpeg, tif is lossless compression. In other words, if one uses iPhoto, Aperture, or Lightroom to import their jpegs, a copy of the original is still saved regardless of the processing done, and there is essentially no difference between the jpg "original" and a tif original. Now, raw is different for all the reasons discussed here over the past weeks. If your camera produces jpegs that are of sufficient quality, as my Olympus cameras do and my much more compressed Canon cameras do not, then just make sure that you are not saving modified versions of the jpeg file as jpeg over the original versions, and you are no worse off essentially than if you save your originals in tif or any other lossless 8-bit format. Hope this is comprehensible... it's early for Saturday. Will von Dauster