Zdepth and Vector Blur or the other way around?

[hugo_guerra]

Hi, it may sound silly to ask, but anyway I still am confused in the order of the Zdepth node plus the Vector Blur node in Nuke.

I am trying to make a Zdepth and MB in the same scene and I am using the Velocity pass and the Z pass out of an EXR from Vray. Anyway I get very weird edges of the 3D plate as soon as I use both nodes, but they work fine alone.

So my question is what should I do first?
Zblur a scene and then Mblur it? or should it be the other way around? and if so, should the alpha be treated in some way in between both nodes?.


Hope it dosen´t sound to silly, and hope to have some help.

All of best

[fr3drik]

I'd simply choose the method that gives the best-looking result ;) but I'd probably start with performing the zdof and later add the vector blur.

EDIT: Sorry, I didn't read the whole post apparently. Your image (rgba) changes after applying a zdof, however the rendered vector output is rendered for the non-zdof'ed image. That's probably why you are getting ugly edges. Applying zdof after vector blur will introduce issues as well, as the zdof pass was rendered for the non-blurred image.

[hugo_guerra]

Ok, thanks for the imput.

So, there is no way of making these happen except if I have it already made in 3D?

Isn´t possible to Vector Blur the Zpass or ZBlur the Velocity without destroying it?

All of best