Mental Ray Photons

[creativeway]

Hi all, the MR rookie strikes again.

 

Question:

 

Is it possible to have lights in a scene only to increase number of photons and not to emit light?? So that we can add photons to the zones were are only a few.

 

Ty

[diegofer_9]

I am pretty sure you can. All you do is put a light and turn it off. That;s what I remember from a long time ago when I was using mental ray.

[creativeway]

You mean that by adding a light and turning it off it will bounce more photons into the scene?

 

I tryed it but seems to make no diference :S

 

perhaps I have a wrong parameter somewhere...

 

ty

[Justin Hunt]

Use a photon map

[creativeway]

You mean, add new lighs just to save the photon map, then render it with single light?

 

Alx

[noi-pi]

I thought Light was the Photon emitter? If you turn it off how will it emit Photons? You could lower it's (lights) intensities and increase photon size.

[Quique]

Ty,

 

You can set the photon parameters of a light to 'manual' instead of automatic. In this manner, you can set a low intensity so that your light doesn't affect the scene through direct light, but then you can set the photon energy (brightness) to a really high level so that the photon does contribute to the scene.

[choco]

something to try too .. :

you can put your spot an adjust it : right click on it and turn off ambiant and specular emission, that should work and so only send photons and non lights values ....