Adding depth of field

…Compositing programs allow us the flexibility in our…post effects as well in our color correction.…It's must easier to put on depth of field, for example,…here in Nuke than it is to do in 3ds Max.…It's not that 3ds Max makes it difficult, but depth of field, when…it's rendered in 3ds Max, is baked in as part of the image.…That is, that image is blurred and we can't…simply get rid of or back off the blur.…Here in Nuke however we can put on our depth of field interactively.…Decide how it looks in a quicker render, and adjust if needed.…

We can even keyframe where that focus is, making,…for example, the focal node, follow up the stairs.…What I'll do to get the depth of field going, is…copy forward some of that Z depth that's in the beauty pass.…Then I'll put on my ZDefocus node and adjust the focus here very easily.…We can see our Z depth here by clicking on the beauty pass read…three, pressing one to show it in the viewer and showing that Z depth layer.…Z depth is a grayscale with white in front and black in…