On Wed, 7 Mar 2018 20:36:14 +0100, Matej Martinovic wrote:
> denoising in darktable is somewhat tricky:
> Use the *denoise (profiled)*, set it to "wavelet" and set blend mode to
> "color". This eliminates the awful color noise. Use a *second instance* of
> denoise (profiled), set it to non-local means and choose blend mode
> "lightness". With that second instance i'll usually reduce the strength or
> opacity to my liking to keep some detail.
> You can set some presets and have them apply the correct denoising
> This info is also available in the manual
> https://www.darktable.org/usermanual/en/correction_group.html, under 18.104.22.168.
> Denoise – profiled -> mode.
I've tried this also a number of times, and also find the NR from
Darktable unsatisfactory compared to RawTherapee. I'm using a
7DnmkII, typically at ISO 6400-8000. I've posted a number of examples
It's unfortunate; there are other reasons I'd prefer to use Darktable,
but when I need significant noise reduction, the artifacts I get are
simply not satisfactory.
> On 2018-03-07 19:59, darkta...@911networks.com wrote:
>> DT 2.4.1
>> I'm having problems with the denoising:
>> Canon 7DMkII and Canon 70-200L IS f/4 ISO1250
>> * before denoise: https://i.imgur.com/k9Njy70.png
>> * denoise profiled: https://i.imgur.com/Unw2i8O.png and it's very
>> * equalizer denoise: https://i.imgur.com/8E1CzHt.png (w/o the
>> denoise profiled). Less blotchy than profiled but not good either.
>> I have also tried Rawtherapee
>> * after noise reduction: https://i.imgur.com/Js5ZGfd.png and it's
>> What can I do to improve the image?
Robert Krawitz <r...@alum.mit.edu>
*** MIT Engineers A Proud Tradition http://mitathletics.com ***
Member of the League for Programming Freedom -- http://ProgFree.org
Project lead for Gutenprint -- http://gimp-print.sourceforge.net
"Linux doesn't dictate how I work, I dictate how Linux works."
darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org