max tree depth

[giraffe]

can anyone please explain me what these parameters are for?

[natty]

from the manual

Max depth - the number of times a ray can be reflected. Scenes with lots of reflective and refractive surfaces may require higher values to look right.

[RErender]

Max depth and max tree depth are two different things. Max tree depth is a raycaster setting. Basically the higher the setting the faster the render but at the cost of higher memory usage.

[natty]

yes your right rerender..... my sleepy eye's are failing me.

[giraffe]

thank you guys
so this setting has nothing to do with render quality? bu only an optimisation of render time and memory usage?

[RErender]

Yes, as I understand it it is just an optimization of render time and memory usage.