Scene lit up even with no lights?

joonaoskarivesa

So I'm fairly new to daz and this is something I've always wondered about but never cared enough to ask about. Well now I kind of need an answer if that's alright :)

So I have a scene, I've loaded up a couple walls and props in to said scene. I add a new distant light, set it to about 80k lumen (I'm using iray). Hit render and the scene looks like there's a god damn medley of angels beaming light directly in to the scene's center. I figured the 80k lumen must've been overkill. Turn it down to 10k. Hit render and it's the same thing, except interestingly some shadows that would've been created by the distant light disappeared. Put it to 1k lumen and still the same. After deleting the distant light entirely and setting the headlamp option to never. I was quite befuddled to find the problem hadn't been solved. Scene was still just as lit as before.

I should mention that the scene I was rendering wasn't a sort of enclosed area with 4 walls and a ceiling. If I'd scooted the camera around just a tad, you would've seen the skydome. 

What's up with this and how do fix?

MarcCCTx

Could be one (or both) of two things

1) there is a built-in light in most cameras called the headlamp, select the camera and turn off the headlamp

2) in the iray environment panel in render turn off the envirnment lights - select local/internal? lights only (sorry not at my Daz machine)

Richard Haseltine

MarcCCTx said:

Could be one (or both) of two things

1) there is a built-in light in most cameras called the headlamp, select the camera and turn off the headlamp

or turn it off in Render Settings, which will affect all cameras without a local override.

Tobor

joonaoskarivesa said:

f I'd scooted the camera around just a tad, you would've seen the skydome. 

There is no skydome in most Iray sets, so unless you bought a set with one included, you're probably seeing something else. Old sets with a skydome designed for 3Delight won't work the same in Iray.

Why not start more simply and add a character to an empty scene. By default, Iray adds an Environment Dome, which is a kind of virtual sky. It cannot be seen in Preview mode, only after a render. The light from the dome does not pass through walls or ceilings, so ordinarily it won't illuminate an enclosed set. If you're working with a truly enclosed set, the light is likely coming from someplace else.

By starting a new scene using only defaults, andf with just a single character, you can more readily experiment with the features and functions of D|S, and how they interact with Iray. Set the Headlamps to Never, and then add lights and other set pieces one at a time, testing the affect of each on the scene. 

joonaoskarivesa

MarcCCTx Got it right. Seems it was this slider that did the trick, setting it from 16 to 0 made the scene completely dark. Thanks for all the answers

fastbike1

You could also just set the render to Scene Only rather than Dome and Scene.