Boost light interference?

[lacilaci]

Well, I think what you all guys talk about is pretty much a white balance problem. And the possibility to render out light with less temperature reflected on objects further away as it has on objects closer to the source?? Am I right??

[Nik]

How a light wave can change its length depends on distance from the source? Am I stupid or this is a physical madness?
Every light have a temperature, it means every light have some wave lengts that constant in space, even on very high distance. Wavelenght may change when light source is moving, but still it's not affected by distance at all.

In other words - light temperature can't change at distance from the source. This is some kind of fantasy behavior of a light, maybe for artistic purposes... I don't know.
Really, you can get anything just with temp of light

[iliyang]

It is not a hack to texture the directional emission of a light source. It's the same thing that IES does, but generalized to the full spectral emission, not just the intensity. Now, making emission dependent on the distance from the light is a hack.

[Polymax]

It's about art tools, in reality, the physics of light so not working.

[Ludvik Koutny]

I would still like to know how is this feature called in other renderers, so i can investigate how it works...

[Nik]

It seems no one knows anything about such a feature in other renders :)
IES photometric profile doesn't do that thing. It even doesn't contains temperature of light, correct me if I'm wrong

[Polymax]

It seems no one knows anything about such a feature in other renders :)
IES photometric profile doesn't do that thing. It even doesn't contains temperature of light, correct me if I'm wrong

You're right!

[maru]

This could happen when you have light bulbs with coloured/reflective frames (like halogens).

Maybe what he means is simply projector maps?

[Captain Obvious]

I would still like to know how is this feature called in other renderers, so i can investigate how it works...

It's basically just light texturing. Whether or not it has a name kind of depends on the renderer. Not all software supports this kind of effect. It's potentially very useful, but it's not strictly speaking realistic.

[Polymax]

It's basically just light texturing. Whether or not it has a name kind of depends on the renderer. Not all software supports this kind of effect. It's potentially very useful, but it's not strictly speaking realistic.

Light Texturing along Light Distribution?

[Ondra]

Such kind of things will have to wait for some Shading API