second bounce thing

[lukx]

In vray manual it's written that second bounce with mult. 1 is "phisically accurate" but on my eye it produce qute strange effects and big saturation. Let's for exampel take wite wall standing on grass. With 1 second bounce the wall will be really dark(green).I don't know but I think that the best way is to put 0,5 for second bounce. And what you guys think about it?

[TishoChaos]

Can you post an image so we can discuss this over on it?

[flipside]

What vray version are you using?

In the newer builds there is a saturation spinner for the GI, so you can use high multipliers for the second bounce without excessive colour bleeding.

wouter

[lukx]

flipside I'm using the newest beta. I've noticed this spinner but if I have to used it than this second bounce mult isn't so accurate

[plastic_]

the problem is that your grass is no grass but rather a green plane. it would bleed the same way in the real world.
what we need is a GI saturation control on material level.

[flipside]

Hey Lukx,

It is accurate, only our eyes adapt to this colour bleeding in real life. Just take a picture with a digital camera in a space lit with a light bulb, it'll be completely yellow if you don't correct it with some kind of filter. Altough if you look into that room, it won't look all yellow. It's a bit the same for the bleeding (that's what I believe

Also I don't care much about physical accuracy, how physically correct can things be if you use lights with values like '1' and '3', that's not even a unit.

wouter

[arobbert]

Plastic,
I put this material based GI saturation control on the wish list a while back.

Alexie