From the course: Nuke Essential Training (2014)

Unlock this course with a free trial

Join today to access over 22,600 courses taught by industry experts.

The ZDefocus node

The ZDefocus node - Nuke Tutorial

From the course: Nuke Essential Training (2014)

Start my 1-month free trial Buy for my team

The ZDefocus node

“

The z-defocus node is used to calculate depth-of-field blurs, and requires a depth channel. It calculates the amount of blur based on the depth channel information, combined with your node settings. It can be used for both CG renders and live-action plates. I have a CG-rendered jet here, and it has a depth z-channel, which I can put into the viewer's output channel, and show you that right here. Critical issue about these depth channels, they must not be anti-aliased. Let me gain up the viewer a bit. So here's my depth z-channel as rendered in Nuke, which does it correctly. So does render man. Many CG renderers do not let me put in the alpha channel, and you can see there's plenty of anti-aliasing in the alpha channel. But the depth z channel must have no anti-aliasing, otherwise it'll introduce artefacts around the edge, okay? Back to our story, I'll re-home viewer. So lets add our z d focus node. I'm going to select the read node, and I'm going to use the tab key to search for it…

Contents