What's this actually mean? Darktable UCS 22 ' uses a brightness-saturation scheme that compensates for the Helmholtz-Kohlraush effect (accounting for the contribution of colorfulness in perceived brightness) and allows an efficient gamut-mapping against pipeline RGB at a constant brightness. It's a perceptually uniform color space built using psychoperceptual experimental data that was gathered for artistic saturation changes. This method is only available for images captured with a Bayer sensor, so Fujifilm X-Trans users are out of luck here.ĭarktable 4 introduces the darktable Uniform Color Space 2022 (darktable UCS 22). ![]() This uses a 'multi-scale wavelet scheme to extract valid details from non-clipped RGB channel(s)' and 'propagates the color gradients from neighboring valid regions using edge-aware color diffusion.' The team writes that this feature promises to limit color bleeding through edges, such as green leaves bleeding color into a reconstructed blue sky. Within the 'highlight reconstruction' module is a new 'guided Laplacian' method. This allows for more saturated colors, notably in blue skies.' Darktable 4.0.0 now includes a 'fully-sanitized color pipeline' from input (color calibration), creative changes (color balance RGB) and through to output (filmic v6). ![]() Darktable writes, 'This change removes the mandatory desaturation close to medium white and black and replaces it with a true gamut mapping against the output (or export) color space.
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