Sun Light shadow pass, urgent!

[dsp_418]

Hope someone can enlighten me on this.

I'm using a sun light and I've rendered a Vray Shadow pass last to find out this morning that the shadow pass for the sun light is behaving very different from the area shadow pass. Not only it look different, but in part of the render it just isn't there.

I've tried both Vray Shadow pass and Vray Raw Shadow, none of them is working fine.

If I use a regular area shadow the Shadow pass looks fine.

[Francisco Penaloza]

are you talking about compositing passes right?

if so I'll recommend to use Matte Shadow instead.

[dsp_418]

Thank you Francisco.

 

Yes, basically I need to tweak the shadow in After Effects. I've never used the matte shadow, need to find a tutorial I guess. Hope is not too

complicated, need to get this done in the next hour.

[Francisco Penaloza]

well to "teak shadows, you need to build your whole comp, from passes, unless you' use to put shadows on elements that will be integrated in your beauty render, for instance, adding people or moving cars to a footage or so.

Matte shadows just add them from the elements menu on the render panel, then they will look kind of aliased, hard edges, but adding a little blur to them fix this issue.

[dsp_418]

Thank you Francisco.

I might not have described correctly what I'm doing.

I'm rendering a Vray shadow pass from Render Elements. Basically I'm separating the diffuse, GI, reflection, depth, wire color and shadow from the Render Elements in order to re comp everything in AE (or Nuke) and then tweak any separate passes as I need.

I don't seem to find Matte Shadows from the Elements Menu on the Render Panel. I thought I had to use a Matte Shadow material.

[Francisco Penaloza]

well to be clear the name is VRay MatteShadow it is there believe me I use all the time, you'll need to invert it and use Mutiply or something similar.