OK, this seems like it should be so easy but I've never tried to match up the 
nuke depth with a depth pass out of maya. I've done a super-simple scene with 
just a plane and a camera. In maya the camera is 10 units from the origin 
(center of the frame). i.e. a camera slightly up on the Y looking down. I've 
rendered this with a depth pass as well as brought in the geometry and camera 
into nuke.

My usual habit is to use a copy node to copy my cameraZ channel into the 
default depth.Z nuke channel (mistake?). I'm using the zBlur node set to "focal 
plane setup" to visualize my depth.

I first assumed I could use the same values in the zBlur node but that doesn't 
seem to be the case.  I can get the focus plane to be at the same point if I 
use that Copy node, set the maya zBlur math to be "depth" , and set the focus 
plane to be 10. This makes sense. Then for the nuke scene (geo, scanline 
render, etc)  I set the zBlur math to be far=0 and set the focus plane to 0.1 
for some reason and the focus planes line up. But I need to adjust the focus 
plane values in opposite directions. 

it's probably something obvious, but shouldn't these line up? and why wouldn't 
the nuke scanline use 10 as it's value for the focus plane? 

Seems like I've gone through all the math options trying (and failing) to find 
something consistent. Any help here?


. . . . . . . . . . . .
Gary Jaeger // Core Studio
86 Graham Street, Suite 120
San Francisco, CA 94129
415 543 8140
http://corestudio.com   

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