Lens effect per light

[fAEkE]

The new vray lens effect really got me interested when vray 2.0 was announced, but now when I'm going to use it in production it's kind of useless since I can't put the effect per light. Or is this possible somehow?

In this case I need glow to greate some light bulbs, but I don't want my whole scene to become blurred with glow.

[Neilg]

You could always do a separate pass. Make the lights visible, apply a black material to everything and render out a channel so it's just the glow. Having them locked into the base render seems like a risky move anyway.

[fAEkE]

That is what I have done in previous projects, and it works fine, but I would still like to be able to do this in the final render.

[vlado]

It would be complicated to do it for one light only (and by extension, its reflections, refractions, GI contribution, the surfaces that it illuminates etc). We worked on a way to apply it only to specific parts of the image, but being a non-physical hack, sometimes this doesn't work too well.

Best regards,
Vlado

[peterguthrie]

Can I ask a stupid question? What blending mode should I use to add the render element to the original render in pshop/ae? I never get it looking quite like it appears as a straight render.

[jacksc02]

Peter, I find "screen" or "multiply" works best. It is tricky to get it looking exactly like the original render. Sometimes I end up using "hard light" but its always scene dependant

[fAEkE]

@vlado
Ok, too bad it's still a good feature tho.