V-Ray for SketchUp - ZDepth - tutorial

V-Ray for SketchUp supports several element channels for easy post-processing of an image's composition. One of those channel elements is Z-Depth -- a grayscale image representation of the image, useful in creating fog and a depth of field effect. In this video tutorial, Fernando Rentas, explains how to create a Z-Depth channel and how to use that channel in post-processing to add a depth of field effect to an image.