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How to compare the before and after image in Darktable?

Photography Asked by kurp on February 26, 2021

I’m using Darktable to edit photos. There is one option, which I’m still looking for, but it seems to be unavailable or hidden somewhere. How to (after making some changes) preview a source image in order to compare before & after versions?

It’s possible to turn on and turn off one separate function (small power off button next to an option), but how to switch between before/after without clicking each of them separately?

3 Answers

Have a look at snapshots, top left in the darkroom mode. For details, have a look at https://www.darktable.org/usermanual/en/module-reference/utility-modules/darkroom/snapshots/

Correct answer by Torsten Bronger on February 26, 2021

darktable 3.0 has a new "culling mode". It displays a fixed number of consecutive images starting from the first selected, and allows you to pan & zoom them. You can zoom up to 100%, hence compare precisely the sharpness of several images. Activate it from the menu at the bottom of the lighttable, or press x with the relevant pictures selected.

Answered by Matthieu Moy on February 26, 2021

You can click on one step of the history stack on the right hand side to view the image "as it is at that step". Click back to the top to view the latest version. Warning: while you are viewing one step of the history stack, any attempt to edit the picture will discard the top of your stack.

You can go to the step you want in history, make a snapshot, come back to the top of history, and compare with the snapshot.

Answered by Matthieu Moy on February 26, 2021

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