This module can be used mainly to process “high dynamic range images” (as an alternative to Tone-mapping, Log encoding, Dynamic range and Exposure…) , but it can also be used on “normal” images, and of course, like all “LA” modules, deltaE, transitions, etc. and the possibility of masks are an interesting addition.
These 2 modules (Jz and Cam16) can be used in “Log encoding” or “Sigmoid” (with or without taking into account Black Ev and White Ev) mode, the second one giving more possibilities of "solutions » (both Cam16 and Jz, for SDR images, with a first opening towards HDR images and viewing on appropriate monitors).
In the 4 cases, the preservation of the color (hue) is assured because they are CAM (Color Appearance Model).
From a personal point of view, I prefer the Cam16 module
Jacques