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Camera Support #11675

Noise profile for canon t7i (aliased to eos 800d in cameras)

Added by Pete Hall about 1 year ago. Updated 3 months ago.

Status:
Fixed
Priority:
Low
Category:
Darkroom
Target version:
Start date:
07/26/2017
Due date:
% Done:

100%

Affected Version:
git master branch

Description

In order to make this work, I had to replace "EOS Rebel T3i" with "EOS 800D" in presets.json, because of the alias in /darktable/rawspeed/cameras.xml.

dt-noiseprofile-20170726.tar.gz - Canon EOS Rebel T7i (EOS 800D) (5.6 MB) Pete Hall, 07/26/2017 11:15 PM

dt-noiseprofile-20170728.tar.gz (6.54 MB) Pete Hall, 07/28/2017 11:41 PM

darktable-noiseprofile-20180501.tar.gz (6.93 MB) Pete Hall, 05/01/2018 10:36 PM

Associated revisions

Revision e226642c
Added by Stefan Schöfegger 5 months ago

noiseprofile: add Canon EOS 800D, fixes #11675

Revision 48f8b613
Added by Stefan Schöfegger 4 months ago

noiseprofile: add Canon EOS 800D, fixes #11675

(cherry picked from commit e226642ce731f32805df3907860bce5ba4ec288b)

History

#1 Updated by Roman Lebedev about 1 year ago

Pete Hall wrote:

In order to make this work, I had to replace

"EOS Rebel T3i"

You meant T7i right?
Because T3i is 600D

with "EOS 800D" in presets.json, because of the alias in /darktable/rawspeed/cameras.xml.

#2 Updated by Pete Hall about 1 year ago

Yes. Sorry. It should be T7i. I can't change it. Can you fix it, or should I enter a new issue?

#3 Updated by Roman Lebedev about 1 year ago

  • Subject changed from Noise profile for canon t3i (aliased to eos 800d in cameras) to Noise profile for canon t7i (aliased to eos 800d in cameras)

#4 Updated by Stefan Schöfegger about 1 year ago

  • % Done changed from 0 to 20
  • Status changed from New to Incomplete
  • Assignee set to Stefan Schöfegger

Your results don't look usable. Please try to get more pixels between under- and overexposed.

#5 Updated by Pete Hall about 1 year ago

Please try this one. Thanks

#6 Updated by Stefan Schöfegger about 1 year ago

Hi,

this does not look much different. Please try a complete other setup. Only a small parts of the image need to be over- or underexposed. Bring some objects in the foreground that are correctly exposed (but out of focus)
Also I am not sure if the camera matches the desired noise profile, the results I get so far seem strange.

#7 Updated by Andreas Schneider 6 months ago

Maybe this tutorial helps to simplify the process: https://pixls.us/articles/how-to-create-camera-noise-profiles-for-darktable/

#8 Updated by Pete Hall 6 months ago

Andreas, I followed your instructions. Here is the result.

"Rebel T7i" needs to be replaced with "800D" in noiseprofiles.json.

I ran your process on a fresh ubuntu 18.04 install, and had to go back to the pre-requisites in the instructions for compiling dt. git, gcc, make, gnuplot, convertt and darktable-cli aren't enough to compile tools, and I needed exiv2 and gphoto2 in order to run the darktable-gen-noiseprofile script, even though I provided all the images, it wouldn't run without those.

All things considered, the instructions worked great though! Thanks very much! I did find providing two different sizes of holes, as well as a void area in the template help to increase the dynamic range.

#9 Updated by Stefan Schöfegger 5 months ago

  • Status changed from Incomplete to Fixed
  • % Done changed from 20 to 100

#10 Updated by Roman Lebedev 3 months ago

  • Target version changed from Candidate for next minor release to 2.6.0

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