EXR FILE HERE: https://www.dropbox.com/sh/8es8qp38kjetu5g/Xd70cRlssr?m
If you dont have DROPBOX install it here http://db.tt/AbUhK8y4
This Tutorial is about setting up your render settings in VRay to get the most of its render passes system. It will show you how to uses the Extra Tex passes Node to create custom render layers, for instance an ambient occlusion pass built in the multichannel exr file.
Furthermore it will explain why passes are a must have in todays 3D and VFX (Visual Effects) scene.
In the second PART of this Tutorial you will be shown how to break up the multi channel exr file to its render passes and how to comp them back together to get your final full customizable rendered image.