An interesting phenomenon of light. can someone explain, please.

cdemerit

So I've built my set, and have been playing with setting to tweak it to my liking, and well have noticed several items the "glow-in-the-dark". The following is a render of my scene with only the kitchen light on. It is rendered using 3Delight and Daz 4.7

http://i.imgur.com/CLZeeQB.png

But when I turn the kitchen light off (no other lights on anywhere) I get this:
http://i.imgur.com/ZTv62ow.png

The only thing that should be glowing is the computer screen. Yet the floors and cabinets are glowing.. maybe not emitting light, but this is going to really mess up dark shots. Also the glass jar on the table, this one isn't as bad, but I had one the other day that was so bright, it looked like it was specifically made to glow in the dark.

So basically, I'd like to understand, if anyone can explain, why some items "glow", and how to prevent it, and as importantly, how to recreate it when I could use it.

Thanks

prixat

I would check the values of the 'Ambient' channel for those materials.

cdemerit

prixat said:

I would check the values of the 'Ambient' channel for those materials.

Thank you very much, that seems to be it... It would have taken me hours trying to find that.

Scott Livingston

Also check whether some of the glass and/or metal surfaces use reflection maps...these maps generally work fine in regular lighting, but might make the surfaces look too bright in low-light situations. And raytraced reflections are better for realism, anyway (though they'll add to your render time).

cdemerit

So I had both situations in this grouping. After turning the Ambient down on ~10%, the floor and cabinets stopped glowing... which is good, I really didn't need a radioactive floor, but the cabinet handles still lit up. I tried turning down the reflective, and it stopped the dark glow, but looked horrible under normal light. The handles did use a reflective map, so I hit them with the Chrome Shader, so far the only metal shader I've found that actually looks like metal, and that did the trick. Now with one setting, I can get a day/night shot...

Thank you.