raven posted at 9:18AM Sun, 12 March 2017 - #4299078

As it's a sealed room, why even bother with having the construct in the scene? Just delete it using the hierarchy editor. This example is illuminated only by the ceiling lights with the ambient set to 10, so no need to use what looks like a point light reflected in the mirror to light the scene. You can also use Snarly's SceneFixer to remove ambient from everything in the scene, then you can manually add ambient to just the materials you want.

All you say is true. But that is exactly the point, if you render the scene with Firefly it doesn't matter if the Construct has ambient, when it comes to speed. In Superfly it does matter. Unnessesary ambient can lengthen your renders.

In my image, I used meshlights just as you did. That's fine. I just did not expect that, let's say an invisible object behind all walls can significantly influence your renders. But it does, in Superfly. Things like if you have a room with big windows, you better put planes as backgound behind them. If you use a skydome, you will need more samples.

It surprised me, so I wanted to share it.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.