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Camera Support #9820

Olympus E-PL3 noise profile

Added by Roman Standzikowski over 5 years ago. Updated almost 4 years ago.

Status:
Fixed
Priority:
Low
Category:
General
Target version:
-
Start date:
02/16/2014
Due date:
% Done:

100%

Estimated time:
Affected Version:
git development version

Description

I have created an Olympus E-PL3 sensor noise profile - attached to this ticket. Please integrate it with Darktable

dt-noiseprofile-20140129.tar.gz (3.31 MB) dt-noiseprofile-20140129.tar.gz E-PL3 noise profile, as generated by the script Roman Standzikowski, 02/16/2014 02:55 PM
dt-noiseprofile-20140224.tar.gz (12.6 MB) dt-noiseprofile-20140224.tar.gz Roman Standzikowski, 02/24/2014 10:13 PM

Related issues

Related to darktable - Camera Support #10364: Olympus E-PL3 Noise ProfileFixed03/11/2015

History

#1 Updated by Johannes Hanika over 5 years ago

heya,

those profiles look good up to ISO 400 and quickly degrade in quality. the script favours fits to parts of the curve where you have many samples (dark areas in your case). unfortunately there seems to be a substantial amount of preprocessing in your camera in exactly those areas. above iso 6400 the noise levels actually look more stable before the transform (straight from cam) than they do after.

maybe it helps taking another set of pictures with a brighter setup, where less pixels are near underexposed. some cameras just violate the assumptions of the noise model too much, these are hopless to profile (don't think this is a classical example of such a camera though).

#2 Updated by Roman Standzikowski over 5 years ago

  • Target version deleted (Candidate for next patch release)

OK, don't close this request yet, I will try again in a few days (I need to get some elements to the setup which I don't have right now).

#3 Updated by Roman Standzikowski over 5 years ago

New profile created - see the attachment.

#4 Updated by Luca Pireddu over 5 years ago

+1

#5 Updated by Roman Lebedev almost 5 years ago

  • Affected Version set to git development version
  • Priority changed from Medium to Low
  • Assignee set to Johannes Hanika
  • Tracker changed from Feature to Camera Support

#6 Updated by Roman Lebedev almost 5 years ago

  • % Done changed from 0 to 70
  • Status changed from New to Patch attached

#7 Updated by Johannes Hanika almost 5 years ago

sorry, the curves are still to far off the data, i don't think it will produce good results :/

#8 Updated by Johannes Hanika almost 5 years ago

  • % Done changed from 70 to 20
  • Status changed from Patch attached to Incomplete

#9 Updated by Pedro Côrte-Real almost 4 years ago

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

There was a noise profile submitted by another user that's recently been merged in issue #10364 so I'm closing this now as no longer needed. Thanks for the submission anyway.

#10 Updated by Pedro Côrte-Real almost 4 years ago

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