2009

Depth of Field Parameter (mental ray Renderer)
Create panel > Cameras > Target button or Free button > Parameters rollout
> Multi-Pass Effect group. > Turn on Enable and choose Depth Of Field (mental
ray). > Depth of Field Parameters rollout
On the
Parameters rollout on page 5210, a “Depth Of Field (mental ray)” choice
has been added to the Multi-Pass Effect drop-down list to support the mental
ray renderer's depth-of-field effects. To use this, turn on Enable in the camera's
Multi-Pass Effect group. Also turn on Depth Of Field on the Camera Effects
rollout of the
Render Setup dialog on page 6067.
The mental ray depth-of-field is exclusive of the multi-pass version of the
depth-of-field effect. The mental ray renderer also supports motion blur for
cameras, but the controls are not on the camera's Parameters rollout: use the
Motion Blur toggle on the Object Properties dialog for camera objects. This
setting has no effect on the default 3ds Max scanline renderer.
NOTE When you use the mental ray renderer, reflected or refracted light rays do
not always respect a camera's clipping planes (set in the Clipping Planes group of
the Parameters rollout). Also, large clipping-plane values can cause poor quality
in the rendering of shadow maps. To fix this, narrow the clipping range or use
ray-traced shadows.
Interface
f-Stop Sets the camera's f-Stop. Increasing the f-Stop value narrows the depth
of field, and decreasing the f-Stop value broadens the depth of field.
Default=2.0.
The f-Stop can have a value less than 1.0. This is not realistic in terms of an
actual camera, but it can help you adjust the depth of field for scenes whose
scale does not use realistic units.
Multi-Pass Rendering Effects | 5229