Thanks all for comments, much appreciated!
Exactly, I've used AE for Post Prod. The main reason is that it saves lots of time when you're working on multiple stills and want the same mood. But also, and this is important to me, you can't use tools as stamp and else, so there is only color correction. I'm always working stills same as there were movies
So, my workflow looks like :
. Comp#1 : Doing the passes job (AO, Reflection and else)
. Comp#2 : #1 + Color correction. Magic Bullets + Levels + Curves + Color Balance
. Comp#3 : #2 + VrayFog passes (with color correction and Exposure adjustements)
. Comp#4 : #3 + DOF + Grain + Chromatic Abberation
. Comp#5 : Render
You can do exactly the same job in PS by using Groups and Layer adjustements for Color correction, It's less time for 1 but not for 5 stills