On Sun, Dec 13, 2015 at 7:35 PM, Frank J. <newslet...@fotodrachen.de> wrote: > By the way ... > the old 80ies KODACHROME-Slides scanned with 4000 dpi have a quality > similar to a modern Camera, except the dust on it ;-)
I think some scanners have some nifty dust removal methods with IR or something of the sort. How are you doing color correction? Does the scanner itself have some good defaults? I've scanned film in the past and by far the hardest thing was getting the colors right. That was with negatives though which are naturally much harder to get right. > The scanner has internal 14-bit color. > I can safe 8 bit JPEG (20-30 MB for each picture on 100%) which will > loose quality. > I can safe 16-bit TIFF which costs 130 MB for each single slide. And I > have a lot of slides ... > > There is also a kind of RAW-Output from the scanner. I didn't test it. > Would it be possible to read RAW from a scanner with Darktable? > > http://imaging.nikon.com/lineup/scanner/scoolscan_4000/ There was recently a scanner file added to rawsamples.ch: http://rawsamples.ch/raws/nikon/SCANNER_NIKON_LS5000.DNG when I first looked at it it was not working properly and I just assumed it was a different format. As it turns out it was this bug, now fixed, that also affected some lightroom generated DNG panoramas: http://redmine.darktable.org/issues/10775 So 2.0rc4 when it's released should support the 4000 as well if the format is the same. It shouldn't really be any different than the 16bit TIFF though as the DNGs these scanners generate are just normal RGB images not bayer. But maybe there's some difference in the processing or in the metadata they add that makes them work better in darktable than the TIFF. I doubt it though. If you decide to test it please submit one of those DNGs to rawsamples.ch so there's a file for us to test against in the future. Something colorful and well exposed is nice (both to look at when testing and to make testing easier). Cheers, Pedro ------------------------------------------------------------------------------ _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
