Yea, thanks Ivan! On Aug 19, 2011, at 5:20 PM, Ivan Busquets wrote:
> Nuke's ScanlineRender outputs depth as "1/z", so the data fades into black as > it gets further from camera. > > This is so that anything outside the bounding box (generally black) will > already have the right value for something that's at infinity, so it will > blend nicely with parts of the scene that are far away. > > It sounds like what you're getting from Maya are "real distance" (not > normalized) values. So if you want to bring the two in line, you can use a > ColorExpression and set the depth channel to be "1/depth.z", and attach that > to either the output of your scanline render, or to your Maya renders > (depending on which one you want to match). > > Hope that helps. > > Cheers, > Ivan > > On Fri, Aug 19, 2011 at 5:11 PM, Gary Jaeger <[email protected]> wrote: > 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 > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users . . . . . . . . . . . . Gary Jaeger // Core Studio 86 Graham Street, Suite 120 San Francisco, CA 94129 415 543 8140 http://corestudio.com
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