Archived posting to the Leica Users Group, 2006/11/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Harrison I guess what I'm trying to come to is the difference in the new digital formats produced by the cameras. I've always assumed raw was the same as tiff in terms of file info. If I have to edit something I'll reopen the original tiff and then save to jpg. Actually, a lot of the time I'll save the original tiff, edit and save the edited tiff and go from their. Maybe I'll just stock up on HP5 and Tri-X while still available. There are times when anachronisms can be in demand. :-) . Walt Harrison McClary wrote: > Walt Johnson wrote: > >> Alastair >> >> One of the things I've notices on the list is people talking about >> jpgs. I was under the impression they were a compression formula >> only suitable for some things. Information lost when opened, modified >> and then closed and then reopened. I've always scanned and saved as >> tiffs which to me is a raw (?) file. Don't get me wrong, jpgs are >> fine for looking at online (computer screens) but not whet one wants >> to print for quality. I've been surprised when seeing digital cams >> using that format to compress space and give the impression of vast >> storage. Wonder how many gigs one could squeeze onto a frame of Fuji >> 50? :-) > > > Walt, > > If one opens jpg file edits and saves as a jpg some information is > lost, yes. This all depends on how much compression is used in the > jpg saving. At level 12 you will see no difference in a tiff and the > jpg that has been saved once. For most of my clients who I have to > ftp or e-mail files to I usually go as far as a level 8 as that still > retains most of the image information but makes transfer times > reasonable. Even at level 8 I often am transferring 100 megs of > information to people. > > The key is to not open edit and resave as a jpg. This is why I shoot > RAW when I am sending a jpg file it is a first generation jpg so it > has not lost much information. > I do not know if I explained this very well...I have not had my coffee > yet. > >