--- Valencic Miha <[EMAIL PROTECTED]> wrote: > Bob, > > I must have used wrong words. I never erase/change > originals. I always leave them intact. I work on > copies. If I say I convert to jpeg, that means I > create a jpeg copy of a raw file. > > Regards, > Miha.
Yes, I understood that. But if you're using the JPEG as the base for all your edits, and saving and re-opening the file multiple times, you lose image quality every time you save it. To try to be more clear: the first time you create a JPEG file, the compression algorithm throws data away. There's no way to ever know what was lost. If you open the file, make edits, and save it again, the JPEG process throws MORE data away. Each time you open and re-save a jpeg, you lose image quality. You should always save your working files in a format that doesn't lose data, such as TIFF or PSD (photoshop). Only convert to jpeg when you are done working on a file, and only if you need to make it smaller for some reason (to email, or put on a web page, or something like that). Hope this is more clear. ===== Bob Meyer I wish I knew what I know now, when I was younger... http://www.meyerweb.net/epson __________________________________ Do you Yahoo!? Yahoo! Mail SpamGuard - Read only the mail you want. http://antispam.yahoo.com/tools * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
