Pngs, tiffs, jpegs: I did some more testing. I tried opening an assortment of pngs, jpegs, and tiffs created by a variety of image editing programs (recent versions of krita, cinepaint, showfoto, an older version of Photoshop, and test images downloaded from the web), and Gimp opened them all with no problem. I more or less randomly tested changing the bit depth, changing to indexed, and changing to grayscale various tifs, jpegs, and pngs created by the various image editing programs and then exporting to tif, jpeg, and png at various bit-depths. Gimp opens its own exported files with no problems, as does showFoto, Cinepaint, and Krita. The only issues I encountered have to do with multi-layer/page tiffs. I don't know what is the difference between multilayer and multipage tiffs, if there even is one. However, they are useful when blending panoramas and HDR images created by hugin. And Photoshop and Cinepaint both can export multilayer/page tiffs. Gimp did properly import a multilayer/page tiff created by Cinepaint. The order of the layers was reversed. I didn't try any layered images with masks, though one image had three layers and alpha channels. Gimp doesn't export a multilayer file as a multilayer/page tiff, rather flattens before exporting. As previously noted, if Gimp flattens/exports a 2-layer grayscale (as opposed to color) tiff, showFoto can't open it. Bottom line, with the possible exception of multilayer/page tiffs (depending on what kind of support Gimp is supposed to have - import seems good, export not), Gimp png, jpeg, and tiff file formats all look/work just fine. BMPs: I also downloaded a couple of bmps from the web and converted them to indexed, grayscale; converted them from sRGB to other ICC color spaces; exported as pngs, jpgs, tiffs; and also exported one tiff as a bmp. I've never actually used a bmp, so I didn't know what to expect. But everything seemed normal, except in the advanced options there is an option to not embed color information, which I never checked. Sometimes it seemed like after converting to another color space, exporting, and reopening, the color space information was intact/honored. Other times I needed to assign the right profile to get the right colors. Someone who actually uses and understands bmps should also check! Elle -- http://ninedegreesbelow.com - articles on open source digital photography _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
