when you create halds from RT do you find you need to change any settings? such as rendering intent or colour space in order to get an accurate depiction of the changes? I haven’t done it in a long time but I found I had issues with brightness back in the day
I think I understand what you mean. Indeed, in the past I’ve had troubles: in RT I applied some color/tone changes, applied the .pp3 to the “neutral HaldCLUT”, saved the new HaldCLUT, and when I tried to apply the new HaldCLUT the result was sometimes very different from the .pp3 changes. I even discussed about this here I think, but it was a long time ago.
To make this manageable I would love to see something like the following (yes, I know know that i am ‘asking’ instead of ‘doing’ so feel free to ignore me)
A searchable website based on tags (i.e. warm, cool, grunge,
high contrast, soft, retro, film sim, etc…) where users can rate and download them. Each LUT should be applied a to the same set of 3-5 images that can show off what the LUT can do. I picture something like the Chrome store for the rating and downloads. Chrome Web Store
Eventually the highest rated ones can be merged into packs based on one some of the tags.
I found this explanation: "A hald clut is a Colour Look-Up Table with three dimensions, a cube, but stored by IM as a square image. The table is indexed by an RGB triplet, and each entry in the table is also an RGB triplet, so the colours in an image can be transformed by a hald clut.
I don’t know the origin of the word “hald”. Perhaps an acronym: “Higher And Lower Dimension”? Or named after the person who devised it? I don’t know." at Editing with hald cluts
Colour lookup tables; in order to be as complete as can be, need to feature something of an HSL matrix; with a given number of Hues, and a range of Saturation and Lightness for each, which you then fill in with the results that the given edit would give. If you graph it out you get a cube (a 3 dimensional graph featuring X,Y,Z coordinates). The HaldCLUT is a means to render that in 2 dimensions, conveniently in a TIFF.