Lighting

[Pandekage]

I realize I've been hogging the Support section of this forum a bit too much, so apologies in advance...

But I've been having problems with light layers. I have two light sources set up in a partially indoor scene: A row of computer monitors (set up with the screens as a diffuse emitting material, light layer 0) and a daytime environment map with layer set to 0. Daylight gets into the room via a large window directly ahead, with correctly modeled glass. When rendering with light layers 1 and 2 checked, only the bank of monitors shows, with everything else dark. When I uncheck layer 0, the environment map turns on through the window, but the monitors turn off. Essentially there is no way to have both on at the same time.

However...it might be one light source overwhelming the other...which I am not sure about, but if that's true, what's a good solution?

Also: This is Skindigo v.3.0.12.

[CTZn]

Hi Pandekage, it is indeed one light, the environment in fact, overhelming your screens.

I am not sure about SkIndigo 3.0.12 UI, but basically a constant emission for them, with a gain of, say... 1 million will get you closer to a balance. The final value may differ greatly but that's the basic step to take.

Light layers would be used for fine tuning or mood control.

[galinette]

It's rather the opposite : the monitors overwhelming the environment (because when layer 0, monitors, in unchecked, the environment appears)

I suppose you just set a blackbody for the monitors, while letting the gain to 1, and no emitter scale values. This means the monitors emit like 1 square foot blackbodies of 6000K, which in real life would toast everyone around.

You need to set the blackbody gain to a very small value, but it's not convenient as the correct value is very small (such as 1E-4 or 1E-5) and you cannot enter such small values in most exporters.
Better is to set an emission scale : the correct unit is lux and typical values for monitors is 200-700

Etienne

[CTZn]

mornin...

[PigsOnTheWings]

It's rather the opposite : the monitors overwhelming the environment (because when layer 0, monitors, in unchecked, the environment appears)

I suppose you just set a blackbody for the monitors, while letting the gain to 1, and no emitter scale values. This means the monitors emit like 1 square foot blackbodies of 6000K, which in real life would toast everyone around.

You need to set the blackbody gain to a very small value, but it's not convenient as the correct value is very small (such as 1E-4 or 1E-5) and you cannot enter such small values in most exporters.
Better is to set an emission scale : the correct unit is lux and typical values for monitors is 200-700

Etienne

This is extremely useful, I was wondering why the blackbodies were overwhelming my scene. Thanks