It’s no so easy for this scene render in another pass the hair because i’m using a Mental Ray distort sahder for my lenses.
Anything I render in the tab atmosphere and effects, like hair or some effect like KY trail (anything that is not geometry) it’s rendered far from it’s right position thanks to the distort shader for the lenses, so I decide to do as a Mr Primitive and use a Mr shader for the hair.
Why not to do the lens distortion in post?
Because it’s very different the offset and the depth of the geometry. With a Mr distort shader I get a very good distortion and the depth of the scene it’s perfect for me.
If I do the distortion of the lenses in post, I only move away the pixels of the rendered image and flattens the image. This don’t work for my final image
I’m very happy with your critic. It really helped me a lot to improve!
Thanks Archaeotect