https://www.darktable.org/2025/08/darktable-5.2.1-released/

The Big Ones

  • The following is a summary of the main features added to darktable 5.2. Please see the user manual for more details of the individual changes (where available).
  • View snapshots side-by-side with the current image, instead of as a partial overlay, by clicking the button next to “take snapshot”. The center viewport is divided in two equal panels and can be zoomed and panned (by dragging while holding the “a” key) as before. The dividing line can not be moved and any click without “a” rotates the layout.
  • The metadata module is now fully configurable and allows to add and maintain any tags which are supported by exiv2.
  • Added a new module “raster mask import”. After setting up a root folder containing PFM files, a file can be selected to be used as a raster mask, it is scaled to full image size. You can also define what combination of the RGB channels of that PFM file will be used for the raster mask.
  • Sigmoid module is now the default tone-mapper selected for new installation.
  • The export module has got a new section multi-preset export which allows to export the selected images with multiple presets in one single export run.

UI/UX Improvements

  • Replaced the zoom range widget, which controls the number of thumbnails displayed on the thumbnail table, with a spin button. This makes it easier to set the exact value.
  • In the 4 ways tab in Color Balance RGB, ctrl+click now picks the actual color while regular click continues to pick the opposite color. This gives users more flexibility and control when selecting hues.

Performance Improvements

  • Eliminated unnecessary GUI refreshes.
  • Improved user interface responsiveness for blending operations

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