my own test of Indigo 0.5.

Bidirectional MLT, 400 mutations per pixel, 25 minutes.

I dont care that Photon mapping can get the same results with 100k photons in 1/4 the time (which I doubt) but for an unbiased render, caustics are hard. Very hard.

I just wanted to test caustics.

plus the setup is very simple with the newest 3ds Max exporters for Indigo 0.5