On Monday 24 February 2003, Anne Wilson asked about graphic formats but didn't say what the end use of the file was to be.
I have an Olympus digital camera with options of saving in three different jpg compressions or tif format. I generally use the best jpg format but sometimes use the tif. The files are downloaded from the camera and I look at each for quality, discarding those which are hopeless <grin> and just close the ones I wish to keep for future use. I don't close these files with the save command for two reasons. One, the Olympus files contain meta data (the f/stop, ISO, etc., data for each shot) and if saved, the info is lost. The other reason for just closing and not saving is that unless I am using the tif format, saving will cause the loss of some information. So, I just copy the original camera files to a CD for storage. When I want to edit or otherwise use the picture, I open a copy of the file (from the CD) in the GIMP and do whatever I want without fear of loosing any data because I still have the original on CD. How I save the copy, altered in the GIMP, depends on final use. If I'm just sending it in an e-mail to someone or using it on a web site, I use jpg. If I am using it for print publication, I use tif. I save the tif files at a resolution suited to the needs of the print publication... newsprint needs a much lower resolution than a glossy magazine or high quality inkjet photo paper and I base the saved resolution on the paper quality. Then I save a copy of the final graphic on yet another CD ... one set of CDs for originals with meta data and one set for edited files. Yes, I have a lot of CDs, but they are inexpensive. Julie
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