On Mon, 27 Mar 2017 23:58:19 +0200 Lorenzo Bolzani <l.bolz...@gmail.com> wrote:
>I just did a quick test: one export with no style applied and another >export with a custom style containing sharpening set to max >settings. The two exported files are clearly different. > >So I think the best option for downscale is to create a few styles >(like 640-sharpen, 1280-sharpen, 2048-sharpen, etc.) and use the >best one. > >About what kind of sharpening to use, I use all the ones you >mentioned (local contrast, highpass, etc.) often more the one at the >same time. They are different. I usually use the basic "sharpen" >with these settings: 1600, 0.800, 250. The threshold value depends >on how much noise is there in the picture as sharpening enhance the >noise. I rarely use the equalizer for simple sharpening only. High >pass with different settings and blend modes (e.g. softlight) gives >very different results as does local contrast. I have also gone the route of try this, try that: local contrast, sharpening and high pass. I ended up with mogrify which is part of imagemagick which is available for both mac and linux I export the jpegs to a temp directory and use: > mogrify -quality "85%" -resize 900x900 -unsharp 1.5x1+0.7+0.2 *.jpg It's extremely fast and I find it the sharpening more pleasing -- sknahT vyS ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
