Can of worms... A second attempt at summary and proposed action: 1. D50 vs D65 doesn't make any difference as long as Lab values aren't communicated to the outside. (E.g. by saving to a file or by having a Lab color picker) 2. The 'natural' conversion for sRGB seems to be D65. So I'll use that. [ Any plug-in that wants something different than D65 will just have to do its own conversion for now. ] 3. To keep the door open for a later implementation of full color profile support, I'll add a reserved parameter to all Lab functions that either accept or return RGB values. (The layer modes could then still choose not to use that and stick with default sRGB / D65) Sounds reasonable? _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer