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Bug #12016

Fujifilm xt-10 raw files underexposed in darktable at high iso

Added by William Brown over 1 year ago. Updated over 1 year ago.

Status:
Duplicate
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
Start date:
02/17/2018
Due date:
% Done:

0%

Affected Version:
2.4.1
System:
Fedora/RHEL
bitness:
64-bit
hardware architecture:
amd64/x86

Description

In some conditions raw files taken with an xt-10 fujifilm (firmware 1.30) are underexposed.

Camera settings are f2.8, shutter on "auto", ev comp set to 0. This should produce 4 images with the same "brightness" level. Iso's tested were 1600, 3200, 5000, 6400. Above 6400 the fujifilm does some other processing that may interfere.

I have confirmed with all modules disabled this issue persists.

Darktable version 2.4.1 (from flatpak).

Screenshot from 2018-02-18 00-28-22.png (298 KB) William Brown, 02/17/2018 04:28 PM

DSCF5103.RAF (31.9 MB) William Brown, 02/17/2018 04:33 PM

DSCF5106.RAF (32 MB) William Brown, 02/17/2018 04:36 PM


Related issues

Duplicates darktable - Feature #11370: Respecting RawExposureBias tag for Fujifilm RAF files New 12/18/2016

History

#1 Updated by William Brown over 1 year ago

ISO 1600

#2 Updated by William Brown over 1 year ago

ISO 6400

#3 Updated by William Brown over 1 year ago

Finally, it may be worth noting the following https://adambonn.com/my-love-affair-with-the-fujifilm-x-pro1/xp1-seventeen/

The camera is "iso-less" above ISO 1600, so it may be writing the raws equivalent to ISO1600 even though it's at ISO6400, expecting darktable to detect this and post process it. Perhaps this is flagged in the raw file? I'm not sure, but this could be part of the issue.

#4 Updated by Roman Lebedev over 1 year ago

  • Duplicates Feature #11370: Respecting RawExposureBias tag for Fujifilm RAF files added

#5 Updated by Roman Lebedev over 1 year ago

  • Status changed from New to Duplicate

#6 Updated by Roman Lebedev over 1 year ago

  • Target version set to 2.6.0

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