The Arnold core renderer provides several separate camera nodes: perspective, orthographic, fisheye, cylindrical and spherical.

For a standard perspective camera, you can simply rely on the Softimage perspective camera. Stereo cameras, belonging to a group that is assigned as the pass camera, are also supported when rendering interactively or from xsibatch.

For an orthographic camera, simply turn the projection type of the camera to Orthographic.

If you need a different type of camera, or to access the camera-specific parameters, you can either:

 

The first method is recommended if you're fine with the current Softimage camera, and you just want to tune attributes specific to Arnold, like the DOF and motion blur settings.

The latter, will create a Softimage perspective camera, and apply the Camera Options property already set, based on the camera type you selected.

Camera Type

The supported types are:

• perspective

• cylindrical 

• fisheye 

• spherical

You can also use custom camera nodes: set the camera type to Custom (lens shader) and connect your node at the top of the lens shaders stack of the camera.

Exposure

Depth of Field

This group controls the Depth of Field settings. Further examples can be found here. 

Enable

Focal Distance

Focus at Interest Point

If enabled, the focal distance will be automatically set to the distance from the camera to the camera interest point.

Distance

The distance at which objects appear in perfect focus, for a non-zero aperture value, in case Focus at Interest Point is disabled.

Aperture

These settings define the geometry of the camera's aperture and its bokeh effects.

Size

The radius of the aperture in world units. The smaller the aperture, the sharper the images (shallower depth of field). In the limit, a size of zero produces no depth of field blurring.

Aspect Ratio

Used to stretch the aperture vertically. A value of 2 produces an elongated defocusing effect reminiscent of an anamorphic lens, while a value less than one will squash it.

Polygonal Aperture

Determines whether the aperture will behave as a regular polygon of N-sides or as a perfect disk.

Blades

Blade Curvature

The curvature of the polygonal aperture sides. A value of 0 means hard straight sides. Increasing this value results in progressively more curved edges, all the way to 1.0 which produces a perfect disk. Negative values produce a "pinched" or star-shaped aperture.

Rotation

Rotation angle (in degrees) of the aperture.