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Depth of Field Parameter (mental ray Renderer) 1383
Depth of Field Par ameter (mental
ray Renderer)
Create panel > Cameras > Target button or Free button >
Parameters rollout > Multi-Pass Effect gro up. > Turn on
Enable and cho ose Depth Of Field (mental ray). > De pth
of Field Parameters rollout
On the Parameters rollout (page 2–1373),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 b oth Enable in t he camera’s
Multi-Pass Effect group, and Depth Of Field on the
Camera Effects rollout of the Render Scene dialog
(page 3–2).
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
theObjectPropertiesdialogforcameraobjects.
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.
Inter face
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 c an 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 Depth of Field
Parameters for Cameras
Create panel > Cameras > Target button or Free bu tton
> Parameters rollout > M ulti-Pass Effec t group > Choose
Depth O f Field effect. > Depth of Field Parameters rollout
Multi-pass depth o f field
Top: Focus is in the m iddle distance, near and far objects are
blurred.
Bottom left: Focus on near objects, far o bjects are blurred.
Bottom right: Focus on far object s, near objects are blurred.
Cameras can generate depth-of-field effects.
Depth of field is a multi-pass effect (page 3–77).
YouturnitonintheParameters rollout (page
2–1373) for cameras. Depth of field simulates a
camera’sdepthoffieldbyblurringareasofthe
frame at a distance from the camera’s focal point
(thatis,itstargetortargetdistance).
You can preview depth of field in viewports.