Here are some of my problem images. http://www.nevermindhim.com/fuji-xtrans-samples
Also included on the page is my style for denoising. On Tue, Apr 26, 2016 at 11:04 AM, J. Liles <malnour...@gmail.com> wrote: > 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. > ___________________________________________________________________________ darktable developer mailing list to unsubscribe send a mail to darktable-dev+unsubscr...@lists.darktable.org
