Based on this thread (and other by Dubcat 
- 1.4 to 1.5 Glossiness Map LUT - Corona for 3ds Max :: User Contributions - Chaos Forum
I’ve made LUTs from all the functions in Photoshop and CameraRAW. Right now I’m using Photoshops Contrast to adjust my maps inside 3dsMax. VRayLUT doesn’t have opacity. So I have to do it this way. After adjusting the contrast I remap the min/max values to what I want. LUTs give you endless possibilities inside 3dsMax!
Would be amazing to have CoronaLUT with opacity!