1D LUTsĪs an example, the start of a 1D LUT could look something like this:Īs a 1D LUT this can only change one input value to one output value, so in the film & TV world means just changing gamma (including contrast & brightness, black & white levels), so is of limited use, as saturation (gamut) cannot be adjusted.Ĭombining 3x 1D LUTs provides control over the R, G, & B channel values independently, so adding the ability to control the grey scale. A LUT takes an input value, and outputs a new value, based on the data within the LUT.ġD LUTs can only re-map individual input values to new output values, based on the LUT data - a simple one input to one output process, regardless of the actual RGB pixel value.ģD LUTs can re-map individual input values to any number of output values, based on the LUT data, and the other associated input RGB pixel data. I have indeed tried the software a few times in the past and seriously considered buying it, as I think its unique color correction tools are extremely useful, but I found it way too unstable for now (at least under OS X).LUTs are basically conversion matrices, of different complexities, with the two main options being 1D LUTs or 3D LUTs. It's a bit like asking for a PDF editor when you are really interested in page layout features. 3D LUT Creator is essentially a standalone image editor with 3D LUT support.Īs such, asking for a "3D Lut Editor" feature in Affinity Photo is not really the right request if we are looking for the color correction features similar to 3D LUT Creator. The software just happens to allow you to save these corrections out as LUTs. While 3D LUT Creator can load and save LUTs, its main appeal are its rather advanced color correction features, most of which actually have very little to do with actual LUTs and could be implemented without ever touching a single 3D LUT file (some of the color space mesh warps use similar concepts, though). When talking about a LUT editor, usually you'd think of a tool that does things like resampling, converting between LUT file formats, generating LUTs to transform between color spaces and tone curves (say, F-Log to Rec709 or similar), generate inverse LUTs, combine them, convert between ICC profiles and 3D Luts etc., similar to the excellent Latice for example.
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