It seems that we're understanding each other. :-) gg@xxxxxxxxxxx escribió: > yes there does seem to be an issue here. I snipped the "generation 0" > part of that image did File | Save As... > then reopened the new version and repeated the save several times. > > There is continual degradation. This should not happen with an > identical image. This seems to suggest that either there is a bug in > the compression or that the decompression is not producing an > identical image from the stored data. The explaination from Øyvind K. clarifies exactly what I'm going through, and his proposal makes sense for me. Photoshop always shows a "save as"-like dialog when you save a JPEG from the camera for the first time, letting you adjust the compression. If I press CTRL+S in Gimp, it saves the file and destroys it. That's where de difference is. Please, keep in mind that I'm not asking to turn Gimp into a Photoshop clone. I've changed not for the money, but for the freedom. So save the "Gimp != PS" stuff. I know it and I'm ok with that. :) (BTW... after a couple of months with Gimp, when I go back to PS I totally hate it. I haven't CMYK but I have other things that I love. I had to make a sign of 30.000 x 11.000 pixels with lots of layers and Gimp worked fine, while Photoshop choked). Back to the topic: I propose to display the quality settings when an image is resaved as jpeg for the first time, if it's possible. I don't know how it's done, but when I take my image to PS from my camera, it asks me to adjust the quality when I press CTRL+S for the first time. After that it saves normally. I repeat: Now I understand the scale used in gimp for the quality. I know that jpeg is a lossy format and my camera uses it and it destroys image data because of that, I always knew that, but that's not my problem here. My only issue now is the first save of a jpeg from the camera without changing the quality (using just CTRL+S) recompresses too much the image. The first time I open the image (directly from the camera) it doesn't look over compressed. If I save it, it is recompressed too agressively (or at least it looks like that). Nothing warns me it will happen, it just happens and I don't know why. I made the comparison with PS because it doesn't happen there. Just like a reference. Thank you for your time! _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
