Opacity vs Refraction

[Streetwise]

I have a scene where I want to include a silhouette of a 3d Person. Obviously using a black diffuse material get's me in the right direction, but what if I want to have some transparency? I've tried using refraction, but then it starts to look like a 3D glass figure which I would expect. However, I would like to figure out a way to keep it looking 2D, with maybe a 10-15% opacity. Is there a cool trick to this?

[Pixelcon]

I think if you use a lightmaterial and then object properties > visibility works for this purpose?

[Joelaff]

Some possibilities:

VrayColor piped into the Opacity channel of a VRayMtl (Where you use the color to control the opacity.)

Render out a matte and do it in the post

Set the IOR to 1.0 and use Refraction, possibly with Fog Color

[eyepiz]

I have a scene where I want to include a silhouette of a 3d Person. Obviously using a black diffuse material get's me in the right direction, but what if I want to have some transparency? I've tried using refraction, but then it starts to look like a 3D glass figure which I would expect. However, I would like to figure out a way to keep it looking 2D, with maybe a 10-15% opacity. Is there a cool trick to this?

[ATTACH=CONFIG]22927[/ATTACH]

I did something similar with the Vray Toon shader.

http://forums.chaosgroup.com/showthr...ght=silhouette