What is the Z-DEPTH

[Protean]

Z depth can be used for a number of things but mostly to fake depth of field in post.

here is one article (http://www.bernardlebel.com/tutorials/AFX_depthPassDof/DOF.htm) which, i think, uses the depth pass and blur but I think you would get a better effect with a proper dof plugin like Frichluft's Lenscare http://www.frischluft.com/lenscare/introduction.php

another article on rendering layers:

http://www.thegnomonworkshop.com/tutorials/passes_layers/passes_layers.html


Other uses would include masking out parts of footage and as quick and dirty enviroment fog/haze.

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