Sometimes one would like to be able to create a HaldCLUT of processing done by some hardware or software which does not permit you to pass through it a HaldCLUT identity image. One solution would be to photograph the identity image (or some color target with patches), process that raw photo in said hardware/software and save as a separate file, and then use the before/after non-raw images to create the HaldCLUT.
For example, to create a HaldCLUT of a camera’s “Portrait creative style”, you could shoot some target, process the raw photo in-camera to apply the style, and then end up with two JPEGs - a reference image and the styled image. Now the difference must be mapped so that a HaldCLUT can be created.
Cross posting from RawTherapee forum where this thread was linked.
Interesting and tried that but options are creating either an eight column 512 x 512 png or a sixteen column 4096 x 4096 png neither of which showed up in RT where all Hald CLUT png files are twelve column 1728 x 1728. What am I missing
@sguyader - I did the other day, forgot to check it today (I had deleted the files).
Will check now … doh! simple mistake! my new folder had to be read-only, works now. Still puzzled about different resolutions but can experiment now! Thanks for bearing with me
