Quote -  A tangent on this: WHERE do you people get good sky images for that environment sphere? I've looked at so many "equirectangular images" that my eyes bleed - but I found NO proper sky images. The few ones I found were all so small that it left them horribly pixelated.

I highly recommend Phillippe Hurbain's site (www.philohome.com) that is linked to on BagginsBill's page that cspears mentioned a few postings ago.  Some of the best I've found so far.

I'm interested as well....

Quote -
I didn't quite set up exactly as you asked, but this should be good enough. I got started with a certain setup at 80% and I just kept going from there. If you really, really want to see a more controlled example, you need to tell me exactly where you want the light as well, because distances over which a given % amount of falloff occurs depends highly on the actual distance to begin with.

Anyway, here is 80% intensity, but not at the front. For reasons I won't explain, P8 ISF reference distance is not adjustable, and is always 1 PNU, or about 103 inches. This is behind the back wall of the wood box. The light is 50 inches from the tall white box.

It's better than good enough.  That shows exactly what I wanted to see and all I can say is WOW!

Thanks for doing the renders.

Can you say anything else about the new feature that influences low light?

bagginsbill - Would you be willing to do a few more test renders to show how GI responds in low light situations?  If you would, please, use the three sided box setup you used back on page 20, but change the spotlight to a point light with your ISF shader, and have the light intensity at the box opening start at 50% for the first render, then 25% for the second, then 12.5% for the third (and on for as many as you are willing to do and would make sense).

Thanks!

I would guess 4 bounces (at least) because I can see a reflection of the edge blend effect in the reflection of the reflection in the right ball.  (Too much recursion here......)

edited to add:  And I forgot to mention that this is an excellent demo - Thanks!

Nope, didn't forget about it - work got in the way.

Thanks for all of the ideas and resources, I'm going to play with it some this weekend and I'm sure I'll be back with more questions.

Is this one of the times it is ok to use Reflection_Lite_Mult?

 Mariner,

Nice job.  What hair are you using with Apollo in those renders?