darktable-org / darktable-org/darktable

Increase culling mode zoom limit to facilitate easier culling on modern systems

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#18,542 22 comments 4 reactions 0 assignees View on GitHub

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feature: enhancement no-issue-activity scope: UI
Dominant language
C
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Description

Is your feature request related to a problem? Please describe.
Coming from Capture One, where I've developed an easy way to cull photos by comparing all of them (up to 12 at a time), deselecting the sharpest image, and flagging the rest for deletion, i've struggled to replicate it in Darktable. I can compare images (albeit a bit slower to select) but I cannot pixel peep as easily, seeing as zooming is forcefully disabled over 4 images.

Describe the solution you'd like
Increasing the limit for the culling mode zoom.

Alternatives
Currently I'm importing my photos through Capture one, then switching back to my linux install, it works, but i'd rather I didn't have to. If there's something I've missed, let me know

Additional context
This is how easy it is for me to compare for culling on capture one:
https://github.com/user-attachments/assets/944c0bf6-9fa2-4a90-855f-386f18914550

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the darktable culling mode entry point and the code that enforces the four-image zoom limit. Check how zoom is currently disabled when more than four images are selected and determine a safe higher limit for modern systems. Done means culling mode permits the requested expanded zoom comparison without breaking selection or display behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
desktop
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
48/100

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