The general and good advice is to not use Gimp 2.9 for "production" work. But I've been using Gimp 2.9 for everything I do with Gimp these days and so far it's been rock solid (albeit very slow on large images). I quite like the new Gimp and I've finally gotten used to using "Save" and "Export". I took a break from working on the lcms2 plugin to write an article on gamma artifacts from mixing colors (gaussian blur, Normal mode blending) in a nonlinear RGB color space. I used Gimp 2.9 (last compiled July 25, 2012, and using my lcms2 plugin) for all of the image blurring and blending. If anyone is interested, the article is here: Linear Gamma vs Higher Gamma RGB Color Spaces: Gaussian Blur and Normal Blend Mode http://ninedegreesbelow.com/photography/linear-gamma-blur-normal-blend.html While working on the article, I noticed that the Gimp Gegl gaussian blur nicely blurs *regular* sRGB images without the darkening artifacts that normally accompany gaussian blurring. But when used on a linear gamma image, the Gegl gaussian blur makes it look like the image was actually blurred in a gamma=0.45 color space (there are "lightening" artifacts). So similar to the problem when opening a 16-bit tif, there seems to be a strange gamma error involved. The regular Gimp 2.9 gaussian blur works exactly as it is supposed to do on both linear and regular sRGB, that is, there are darkening artifacts in the regular sRGB color space, but not in the linear sRGB color space. I put up some sample images showing the Gimp Gegl gaussian blur vs regular blur: Gimp 2.9 Gegl and regular gaussian blur http://ninedegreesbelow.com/temp/gimp29-gegl-blur.html Also, it seems the Gegl gaussian blur "Size" is different from regular gaussian blur "pixel": Size 10 seems to be approximately 30 pixels, which will take some getting used to. I didn't check to see if the Size/pixel ratio seems constant across different sizes. Does anyone know if it is? Elle Stone -- http://ninedegreesbelow.com Articles and tutorials on open source digital imaging and photography _______________________________________________ gimp-developer-list mailing list gimp-developer-list@xxxxxxxxx https://mail.gnome.org/mailman/listinfo/gimp-developer-list
