The following options control functionality in the darkroom view and associated modules.


pen pressure control for brush masks
Controls how the pressure reading of a graphics tablet impacts newly generated drawn mask brush strokes. You can control the brush width, hardness and opacity. “Absolute” control means that the pressure reading directly defines the attribute with a value between 0% and 100%. “Relative” means that the pressure reading adjusts the attribute between zero and the pre-defined default value (default off).
smoothing of brush strokes
Sets the level for smoothing of drawn mask brush strokes. Stronger smoothing leads to fewer nodes and easier editing at the expense of lower accuracy.
pattern for the image information line
Set the information to be displayed in the image information line. You can use any variables in the variables section as well as $(NL) for a new line.
position of the image information line
Choose the darkroom panel in which the image information line is displayed. Choose between “top left” “top right” “top center” “bottom” and “hidden” (default “bottom”).
border around image in darkroom mode
Process the center image in darkroom mode with a border of the given number of pixels (default 20).
show scrollbars for center view
Should scrollbars be shown in the center view of the darkroom (default off).
demosaicing for zoomed out darkroom mode
Choose how to demosaic images in the darkroom view when not viewing the image at 1:1 zoom scale
  • always bilinear (fast) is fastest, but not as sharp
  • at most PPG (reasonable) uses PPG + interpolation modes
  • full (possibly slow) will use exactly the settings for full-size export
(default “at most ppg (reasonable)").
reduce resolution of preview image
Reduce the resolution of the navigation preview image (choose from “original”, “1/2”, “1/3” or “1/4” size). This may improve the speed of the rendering but take care as it can also hinder accurate color-picking and masking (default “original”).
show right-side buttons in processing module headers
Choose whether to show the three buttons (multi-instance, reset, presets) on the right-hand-side of the module header for processing modules. These buttons will always appear when the mouse is over the module. At other times they will be shown or hidden according to this preference selection:
  • always: always show all buttons
  • active: only show the buttons when the mouse is over the module
  • dim: buttons are dimmed when mouse is away
  • auto: hide the buttons when the panel is narrow
  • fade: fade out all buttons when the panel narrows
  • fit: hide all the buttons if the module name doesn’t fit
  • smooth: fade out all buttons in one header simultaneously
  • glide: gradually hide individual buttons as needed
(default always)


display of individual color channels
Controls how individual color channels are displayed when activated in the parametric masks feature. You can choose between “false color” and “grey scale” (default “false color”).
hide built-in presets for processing modules
If enabled, only user-defined presets will be shown in presets menu for processing modules – built-in presets will be hidden (default off).
expand a single processing module at a time
Controls how processing modules are expanded in the darkroom. If this option is enabled, expanding a module by clicking collapses any currently expanded module. If you want to expand a module without collapsing the others you can do so with Shift+click. Disabling this option inverts the meaning of click and Shift+click (default on).
only collapse modules in current group
When choosing to expand a single processing module at a time (using the logic defined in the previous setting), only collapse other modules that appear in the current visible group. Disable this option to ensure that modules in non-visible groups are also collapsed (default on).
expand the module when it is activated, and collapse it when disabled
Select this option for the darkroom to automatically expand or collapse processing modules when they are enabled or disabled. (default off)
scroll to processing modules when expanded/collapsed
With this option enabled the darkroom side panel will scroll a processing module to the top when it is expanded or collapsed (default on).
white balance slider colors
Controls the appearance of the sliders in the white balance module.
  • no color: background of the sliders is not colored at all.
  • illuminant color: slider colors represent the color of the light source, i.e. the color you are adjusting to in order to achieve neutral white
  • effect emulation: slider colors represent the effect the adjustment would have had on the scene. This is how most other raw processors show temperature/tint sliders colors.
(default no color)
colorbalance slider block layout
Controls the appearance of the shadows/mid-tones/highlights sections in the color balance module.
  • list: all sliders are shown in one long list (with headers)
  • tabs: use tabs to switch between the blocks of sliders
  • columns: the blocks of sliders are shown next to each other (in narrow columns)
(default list)