I use Fuji cameras that use X-Trans sensors (Fuji X100S and X100T). I don't know how much that is related to the current discussion, but I've had problems with moiré in some of my RAW files. See
http://redmine.darktable.org/issues/10333 FC From: "J. Liles" <[email protected]> To: darktable <[email protected]> Cc: Date: Tue, 26 Apr 2016 11:04:28 -0700 Subject: [darktable-dev] X-Trans torture tests Group, I've recently acquired a camera with an X-Trans sensor, and have had little trouble generating images that contain areas prone to demosaicing artifacts. Is anyone interested in these? If so, is there a certain place I should host/send them? I have camera generated JPG for comparison along with the RAF files. In playing around I've discovered a few things: 1) Color smoothing is mandatory, as fine lines and especially specular highlights will always generate nasty color artifacts when using the baisc demosaicing. Seems like a smarter highlight recovery algorithm could help identify many of these problem spots. 2) None of the 'denoise' modules have sufficient parameter ranges to deal well with the X-Trans files. 3) When sufficient denoising is performed to remove maze and color artifacts, the difference between VNG and Markesteijn demosaicing is indiscernible. I have a style preset which can produce images that match the camera JPGs as far as noise/detail goes (utilizing the equalizer module) at ISO 3200. Color is another matter, but I've ordered one of the Wolf Faust IT8 charts to try and make an ICC profile. (I tried making one using the imaging-resource.com multi target studio shots, and while the results were OK, they weren't great). P.S. Is there any plan to support Fuji's RawExposureBias exif tag? It is necessary to display high ISO RAF images at the correct brightnesss. -- Francisco Cribari - http://www.cribari.com.br - "All theory, my friend, is grey, but green is life's glad golden tree." --Goethe (Faust) ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to [email protected]
