Project

General

Profile

Feature #10020

Chromatic aberration improvement

Added by Alex Alex about 4 years ago. Updated about 4 years ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
Darkroom
Target version:
Start date:
07/22/2014
Due date:
% Done:

0%

Affected Version:
git development version
System:
all
bitness:
64-bit
hardware architecture:
amd64/x86

Description

I enclose a comparison with Adobe Lightroom, which removes the CA much better.
Please improve this feature. Thank you in advance.
PS: On the screenshot should Lightroom CC instead of Photoshop, sorry :)

CA_comparison_Darktable_vs_Photoshop.jpg (3.62 MB) Alex Alex, 07/22/2014 01:11 AM


Related issues

Duplicates darktable - Bug #9024: chromatic aberation correction produces artifacts Triaged 10/27/2012

History

#1 Updated by Roman Lebedev about 4 years ago

  • Duplicates Bug #9024: chromatic aberation correction produces artifacts added

#2 Updated by Pascal de Bruijn about 4 years ago

  • Priority changed from High to Low

This isn't a high priority issue, not even maybe.

#3 Updated by YAFU YAFU about 4 years ago

Have you tried TCA chromatic aberration correction under Correction group > Lens correction?

#4 Updated by Alex Alex about 4 years ago

YAFU YAFU wrote:

Have you tried TCA chromatic aberration correction under Correction group > Lens correction?

Yes, this is slightly better, but time-consuming. Adobe solves it perfect with a single click :)

#5 Updated by Pascal de Bruijn about 4 years ago

It just means you need to create a correction model for your lens:

http://www.darktable.org/2013/07/have-your-lens-calibrated/

#6 Updated by Pascal de Bruijn about 4 years ago

  • Category set to Darkroom
  • bitness set to 64-bit
  • System set to all
  • Affected Version set to git development version
  • Target version set to Future

the lens correction module require lens calibration data as I've outlined in the previous post. as a user you can generate and contribute this data. this is likely the best approach regardless.

the chromatic abberation module does auto detection and thus might fail to detect properly, which isn't unexpected.

there was some unfinished work done on general improvement of chromatic abberation module:

https://github.com/darktable-org/darktable/pull/539

#7 Updated by St├ęphane Gimenez about 4 years ago

Pascal de Bruijn wrote:

there was some unfinished work done on general improvement of chromatic abberation module:

https://github.com/darktable-org/darktable/pull/539

@Alex: If you provide a link to the raw picture I can test the revamped version of the chromatic aberation correction module for you. Or you can apply the patch yourself to the development version of darktable. It should work properly on your picture.

Also available in: Atom PDF