Llorenç Herrera <lha@xxxxxxxxxxxxx> writes: > LZW, ZIP, RAR, Compressed-TIFF ... etc are all NON-degrading-type > compressiong techniques. The final result shows EXACTLY the same digital > data you can see if it weren't compressed. Well, to be *really* nitpicky, TIFF supports several choices of compression methods, and one of them is JPEG which is of course lossy. Do a "save as" to TIFF in photoshop CS (and I think many earlier versions) and you'll get a dialog box to pick the compression method, and JPEG is one of the options. Not very many software packages support it, and I haven't encountered it *ever* "in the field" (that is, in a file somebody else delivered to me), but it *is* an option in the TIFF standard and at least one program actually supports it. I don't off-hand see any reason why one would ever actually want to write a TIFF file with JPEG compression. -- David Dyer-Bennet, <mailto:dd-b@xxxxxxxx>, <http://www.dd-b.net/dd-b/> RKBA: <http://noguns-nomoney.com/> <http://www.dd-b.net/carry/> Pics: <http://dd-b.lighthunters.net/> <http://www.dd-b.net/dd-b/SnapshotAlbum/> Dragaera/Steven Brust: <http://dragaera.info/>
