Geometric masks, a variant of manual masks, let you define the mask using a few support points. The user can draw manual masks with a brush. Parametric masks are defined on the basis of image properties (the parameters). ART distinguishes between four mask types. However, several levels act cumulatively for combined effects. ![]() What happens in detail in ART? All layers act independently there and each can be used with a different mask type. The mask creation model that exists in LightZone also extends to all tools except the RAW tool. In darktable, and in LightZone, masks are extremely powerful and easy to use. The developer needs to think outside the box here. ![]() The latter always links masks to layers, or to be more precise to special filter layers. Also, using the masks can be very awkward, because they are obviously based on the RawTherapee mask code. In the 1.5.4 version, masks can only be used with the tools from the Local Editing group – not very helpful, since masks often prove to be extremely useful, especially for exposure. However for now this ability is pretty limited. MasksĪRT touts the ability to make local adjustments via masks as one of its highlights. These are plugins in the form of plain text files that can be developed from a shell script. This often makes complicated structures necessary, which then cause quite a bit of additional work.ĪRT has seen another exciting development in the form of User Commands. What is more of an issue is the fact that ART only provides circles for the tool instead of freely definable shapes for the inserts. However, the tool is less suitable for beginners due to its extreme complexity. Darktable has even replaced it with a wavelet-based version that allows far more granular corrections at different scales of detail. However, this tool has two disadvantages compared to darktable's variant. You can set some parameters in the panel, for example, the size of the insert, its Opacity, and the Detail protection. You will not normally need to pay any attention to them, because all the actions can be performed directly with the mouse in the image window. ![]() ![]() On the right side of the panel, you can see the parameters used in the process. Figure 9: Quick, easy, and often quite effective: the Spot Removal tool.
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