Le 05/05/2014 18:10, Jean-Pierre Verrue a écrit : > Hi everyone! > > I have dng files taken whith a Pentax k20d during 2007, 2008 and 2009. > This morning, I want to print one of theses files. > I print my photos with an Epson stylus pro 3880. I never found a good > software under Linux to drive my printer, thus I use W7+driver Epson+LR > to print. > > I have opened my dng file whith DT (1.4.2 on opensuse 13.1) adjust > exposure, contrast, sharpening, etc, and go to lighttable to export my > picture. For printing, I export jpg or tiff. Today I have exported jpg. > > Next step, I import the jpg whith LR. When I want to open this jpg, LR > don't show the thumbnail and display a message : "Thumbnail not > available for this file". When I click the import button, LR says : > "Echec de la localisation d'un emplacement pour le fichier importé". > > I have deleted the file, re-exported from DT and imported in LR, but the > same messages are displayed. > I have exported the same picture in tiff format and imported in LR, but > the same messages are displayed. > I have exported another dng file from the same body and imported in > LR... the same messages are displayed. > I have exported a few NEF file from my actual Nikon d800 and imported in > LR. No problem ! > > Can you help me ? > > Please, don't says "Do not use LR" : they are NOT good driver for this > printer under Linux. > > (sorry for my very bad english) >
Thanks you for all your comments Today I have renewed all my previous tests with photoprint and turboprint. I have also experimented a work around to produce a file that LR can import. - I have re-installed photoprint and printed the jpg file produced by DT from my old DNG file. The result is unacceptable because it's too saturated, too yellowish, too greenish. There is curious noise added by the software (of course, Iset color management and loadedpaper icc profile) - I have also re-installed turboprint, configured, loaded paper icc profile and printed the same picture. The result is slightly better, but still unacceptable. It's still too saturated, the colours are too greenish, too yellowish. But, this time, ther's no noise any more. - To work aroundthe inability to open files produced by dt with LR, I opened the dt's tiff with gimp and just export a jpg. Now this jpg was opened finely from LR. I printed the picture (with paper profile, of course). The printed picture is fine. Saturation and color look like what you can see on screen (of course, my screen is calibrated), no noise... I know that these three systems use different RIP : - LR uses the RIP included in the EPSON driver - Photoprint uses the Gutenprint RIP - And TurboPrint uses is own RIP I know that normally, I should use a specific profile for each RIP and each paper, because colours can be rendered differently by RIPs, but it is strange that whatever the profile, be it a profile provided by the manufacturer of paper, or calculated by a profile provider, or a profile made by myself with a spectrophotometer, whatever paper or printer, I always get the same kind of results: printings look far too saturated, too green, too yellow. I have done so many unsuccessful tests, lost so much time, I have messed so much paper and so much ink for several years, that today I affirmthat there is no possibility to print photos correctly¹ with linux. I expect to be shown to the contrary, with photographs to be shown. If you are interested, I can send you my tests by mail. ¹ - When I say "print correctly" I mean pictures that could be hung in an exhibition. No "Family" photos. Photographly yours ;-) ------------------------------------------------------------------------------ Is your legacy SCM system holding you back? Join Perforce May 7 to find out: • 3 signs your SCM is hindering your productivity • Requirements for releasing software faster • Expert tips and advice for migrating your SCM now http://p.sf.net/sfu/perforce _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
