On Wed, 7 Aug 2019 09:42:09 +0200 Markus Jung <maju.j...@web.de> wrote:
>> I have spent the whole afternoon on it and found that the problem >> is DT, more specifically, the export with the scaling down. When I >> set the export scaling to 0, it's plenty sharp enough. > >Did you enable "high quality export" in the settings? No. The very soft export settings are: quality 55% size 900x900 but on the other hand when I have: qulality 55% size 0x0 It's sharp. Right now, to shrink to 900x900px, I run: convert -strip -interlace Plane -gaussian-blur 0.05 -quality 85% -resize 900x900 -sharpen 1x2.0 <infile> <outfile> > >Explanation: >With HQ export, the pipeline processes the RAW at full resolution, >applies sharpening there and downscales the image afterwards. >Problem: After downscaling, a second round of sharpening should be >applied since small details get lost and the overall impression of >sharpness is lower. > >Without HQ export, some modules (e.g. noise reduction) perform >different depending on the export resolution, since the RAW is >downscaled at the beginning of the pipeline. The results did not >match the 100% darkroom preview. But sharpening is applied >properly ... > >My approach: Export always at full resolution and downscale >afterwards using a shellscript which performs incremental >downscaling and sharpening (reduction to at most 2/3 of the size, >apply slight sharpening, repeat until desired resolution is >achieved). Guess i could write a lua integration some day. > >Regards, >Markus >____________________________________________________________________________ >darktable user mailing list >to unsubscribe send a mail to >darktable-user+unsubscr...@lists.darktable.org > -- sknahT vyS ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org