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"David J Taylor" wrote:
MartinS wrote: "Terence" wrote: for a 4x6 print, I would try to stick with 1200x1800, although you probably won't notice the difference if you went a little lower than that (within reason). As far as the file format to use, jpeg is fine, so long as you don't continually save/re-save i.e. if you do a lot of post-processing. If you do post process, use any lossless format (tiff, bmp, etc....), then as a final step you can save as jpg and bring that to your photo service for printing. I've found that the Wal-Mart self-serve reader won't take files larger than ~1MB. It's probably better to make a JPEG with more pixels, but with more compression as well, if you are limited in file size. You shouldn't need a lot of compression to make a 1200 x 1800 picture less than 1MB and still keep good quality. Try it and see. My (obsolete) HP 318 produces 1200 x 1800 images of 700-900KB at "best quality" setting. This is equivalent of saving a jpeg at 95% quality from a graphics editing program. Quality is excellent at 4 x 6 in. -- Martin S. |
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