Sorry for being a bit absent recently, but I'm quite busy at the moment, and I couldn't find the time of looking through all the great new postings here.
This is a scene for testing materials for path tracing, since reflections for example look very different.
The scene is completely lit by luminous materials: I used two sets of identical objects (the neon tubes at the ceiling and the light above the door): one set is invisible with a strength of 300, and the other set is visible and has a multiplier of 1.
This was necessary, because visible luminous objects with a multiplier of 300 looked very unnatural and completely overexposed.
I had to increase the exposure of the camera to 2.5 to get the right lighting.
There's a lot of objects in this scene. I purchased a very basic corridor scene, which was more or less only the wall parts and the floor ($ 5,-!). I edited mostly everything and added some objects I bought, and a lot of free stuff, plus some stuff I built myself. I had to create each and every material from scratch, but it was fun to do that, since path tracing makes it look much more natural.
But there is still some noise although I used an AA of 20. In this case it looks a bit like movie grain, so somehow I like it, but to get a really noisefree image, I would have to increase the AA even more, and rendertimes would be quite a problem.
The mechanical spider is a free object from Cadnav as far as I remember, and the robots are the default mannequins from Mixamo.