GIMP - How to apply 3D LUT?

Software GIMP
61

@David_Tschumperle, the filter has three actions: “Ignore”, “Lock source” and “Replace source by target”.

Is it possible to have a 4th option: “Replace source by gray target”? In which the gray target has the same value as the source color?

62

‘value’ as in HSV ?
I’m curious, but for which case you want to do that ? B&W conversion ?

63

For color correction. So if you know something is gray, you can make it gray.

edit: Iain is right. (see below) This is unnecessary. Thank you David.

64

Something strange happens with my color picker (cursor):

1029×579 123 KB

65

It’s not too hard to do this already. Just copy the ‘Color name’ from the first color picker to the second color picker, press enter. Now the two colors match and you can just reduce the saturation to get grey.

66

Iain, you are absolutely right. It hardly takes time. So for now, I will enjoy this awesome filter. Thank you.

69

Hi,

First great work on the ability to install custom LUTS.
I fond that the strength option for the LUT doesn’t work though.