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Camera Support #10950

Noise Profile for Leica X2

Added by Matthew Wronka about 3 years ago. Updated over 2 years ago.

Status:
Fixed
Priority:
Low
Assignee:
-
Category:
-
Target version:
Start date:
03/17/2016
Due date:
% Done:

100%

Affected Version:
git development version

Description

Attached is the results of noise profiling. I eye-balled the resulting PDFs, but other than basically having the same shape as those in http://www.darktable.org/2012/12/profiling-sensor-and-photon-noise/, I haven't done any verification. The output of the profiling script suggested running: "darktable --noiseprofiles ./presets.json", although this didn't seem to load the profile (images taken with the camera, even after discarding the history stack, only offered a generic noise option).

My understanding is that the original Leica X has identical behaviour from ISO 3200 and below (its supported range). I'm not sure about the later Leica X models.

dt-noiseprofile-20160316.tar.gz (3.31 MB) Matthew Wronka, 03/17/2016 03:12 AM

dt-noiseprofile-20160418.tar.gz (965 KB) Matthew Wronka, 04/19/2016 03:30 AM

L1021331.DNG (23.3 MB) Matthew Wronka, 04/19/2016 03:31 AM

L1021330.DNG (23.3 MB) Matthew Wronka, 04/19/2016 03:32 AM

L1021329.DNG (23.3 MB) Matthew Wronka, 04/19/2016 03:34 AM

Associated revisions

Revision d2d16755
Added by Stefan Schöfegger over 2 years ago

noise profile: add Leica X2, fixes #10950

Revision 6b22ba9c
Added by Roman Lebedev over 2 years ago

Merge remote-tracking branch 'upstream/pr/1416' into HEAD

  • upstream/pr/1416:
    noise profile: add Leica X2, fixes #10950

Revision 92fa0911
Added by Stefan Schöfegger about 2 years ago

noise profile: add Leica X2, fixes #10950

(cherry picked from commit d2d16755ed1b320368a91bf67ff7ab275fd7633d)

History

#1 Updated by Pedro Côrte-Real about 3 years ago

  • % Done changed from 0 to 20
  • Status changed from New to Incomplete

Thanks for submitting these. You seem to have shot several images per ISO level, and some are better than others. It would be good to restrict it to only the better ones. The way to check it is that the flat noise profile shows a graph with a line at 1 all the way through and that in the noise levels the curve matches the data. Only the green channel really matters.

We also need a sample raw file to test this against. It would be nice if you could submit it to rawsamples.ch as well.

#3 Updated by Matthew Wronka about 3 years ago

#4 Updated by Matthew Wronka about 3 years ago

#5 Updated by Matthew Wronka about 3 years ago

#6 Updated by Matthew Wronka about 3 years ago

Remaining files for the lower ISOs are at: http://matt.wronka.org/matt/tmp/darktable/10950/

Hopefully the noise profile in these is more useful.

#7 Updated by Stefan Schöfegger over 2 years ago

Noiseprofile looks good to me.
Pleas upload one sample to http://raw.pixls.us
Afterward i create a PR with your data.

#8 Updated by Matthew Wronka over 2 years ago

uploaded L1021324.JPG from the Lecia X2 to raw.pixls.us

#9 Updated by Stefan Schöfegger over 2 years ago

Jpeg is not needed on raw.pixel.us.
Please upload one DNG file that comes directly from the camera.

#10 Updated by Roman Lebedev over 2 years ago

Stefan Schöfegger wrote:

Jpeg is not needed on raw.pixel.us.
Please upload one DNG file that comes directly from the camera.

We have got https://raw.pixls.us/getfile.php/882/raw/L1021324.DNG

Does that camera produce different variants of the raw file, compressed and uncompressed?
Is there a raw crop? If yes, then all the combinations are of interest too.
Also, does it only produce DNG?

#11 Updated by Matthew Wronka over 2 years ago

Sorry, mean the DNG version of that file (copied and paste error from the terminal listing).

No, there are neither crop options nor options for compression on the DNG. The camera saves either JPEG (two levels of compression, various resolutions) or DNG+JPEG, with no options on the DNG. (Leica AFAIK uses DNG as their only native raw format across their non-Panasonic cameras; I'm not familiar with the Panasonic re-brands.)

#12 Updated by Stefan Schöfegger over 2 years ago

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

#13 Updated by Roman Lebedev over 2 years ago

  • Target version set to 2.4.0

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