On Mon, Feb 25, 2013 at 3:10 PM, John P Santos <[email protected]> wrote: > Re: export is missing jpeg settings. All it has is quality. As far as I > have seen in applications, there are a number of other settings.
It's not missing anything, we purposefully left them out for several reasons, one of which is the fact that the options would heavily clutter the export dialog at little tangible benefit. That said, we copied UFRaw's approach, of having a JPEG Quality slider which affects the other settings in a sensible way: if(quality > 90) jpg.cinfo.comp_info[0].v_samp_factor = 1; if(quality > 92) jpg.cinfo.comp_info[0].h_samp_factor = 1; So JPEG Quality 93 and higher have chroma subsampling disabled and give fairly large files at very high quality. JPEG Quality 91/92 only have horizontal chroma subsampling enabled, which gives you a reasonable trade-off between quality and file size. JPEG Quality 90 and lower have both horizontal and vertical subsampling enabled, which gives you the smallest file sizes at lower qualities. Aside from that, we always generate optimized JPEGs and we don't generate progressive JPEGs. Regards, Pascal de Bruijn ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
