I notice in the list of updates for 1.2 that Area to Render: Selected is now possible.
If anyone has used this, does this act like the subset of scene in Mental Ray? What I mean is does it render an object and cut out all unselected objects while still being able to receive GI and other contributions from the surrounding objects?
From what I’ve read, no, this is a rendertime version of the Isolate Selection option in the viewport, so no GI, reflections etc. The functionality you mean was meant to be added at a later point I think.