Been working on the exporter for luxreder the past weeks.
Lot's of new features added.
This is what I've implemented:
- DOF - with manual or "focus on object" feature.
- Environment map support (spherical).
- Transmission and IOR \ Architectural mode in glass shaders
- removed optimizations to speed up export of models (extremely fast now).
- Compiled new set of scripts.
Here's my dev screenshots:
Here's a screenshot showing it works in 3dsmax 2011:

Showing the materials in the new material editor:

Here we have DOF - IOR in glass (on and off) - and environment map (spherical) :






