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
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--
sknahT
vyS
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