Vray Light / LightMtl Opacity - Creating highlights only, real Softbox-like?

[Guest]

I like having the intensity of the light separate to the reflection. Gives me more control over tweaking

[JAPAN_DIGITAL_IMAGE]

Could you explain your workflow?
I dont get it yet but seems interesting.

[Guest]

Sure, I turn the reflection off on all the V-Ray plane lights and have them sit just inside the enclosure. I then apply a V-Ray light material to each side wall directly behind the light. Both the V-Ray light material and the V-Ray plane light have an EXR texture of a softbox fabric. This way I can control the intensity of the light and the reflection separately. This doesn't really get around your problem of blacks parts showing in the reflection but in my case I use the full area of the EXR as there are no black/non illuminated areas.

[squintnic]

that output map trick is a life saver.....
bump in case youre stuck doing studio renders

[Laserschwert]

This shouldn't disappear in the depths of the forum, so I'll chime in to say that I just discovered this thread and it saved my ass. Thanks!

BTW, I think the easiest solution to this would be to just add max's standard "output" rollout to the VRaySoftbox map, so you can just tick the "Alpha from RGB Intensity" in there, without the need for a separate Output map.

[MANUEL_MOUSIOL]

This shouldn't disappear in the depths of the forum, so I'll chime in to say that I just discovered this thread and it saved my ass. Thanks!

BTW, I think the easiest solution to this would be to just add max's standard "output" rollout to the VRaySoftbox map, so you can just tick the "Alpha from RGB Intensity" in there, without the need for a separate Output map.

yep, waiting for this feature too!

[grantwarwick]

You can also use the composite map if it's easier

[MANUEL_MOUSIOL]

You can also use the composite map if it's easier

well, it would be easier to just be able to make the softbox itself have an alpha channel. but its a small inconvenience I guess

[piotrus3333]

Sure, I turn the reflection off on all the V-Ray plane lights and have them sit just inside the enclosure. I then apply a V-Ray light material to each side wall directly behind the light. Both the V-Ray light material and the V-Ray plane light have an EXR texture of a softbox fabric. This way I can control the intensity of the light and the reflection separately. This doesn't really get around your problem of blacks parts showing in the reflection but in my case I use the full area of the EXR as there are no black/non illuminated areas.

there is specular contribution spinner in VRay light options. easier setup.

[kagemaru]

there is specular contribution spinner in VRay light options. easier setup.

There wasn't in 2012

[piotrus3333]

heh, missed the sudden 3 year gap in the post, sorry.

[^Lele^]

"Multiply Color By Opacity" doesn't do what you want?