Overview

The DlCameraSettings node provides 3Delight-specific parameters that refine the description of a camera.

The DlCameraSettings parameters.

Object Assignment

The first section allows specification of the camera the DlCameraSettings node will be assigned to. A scene graph location designating a camera is expected.

The object scene graph location can be specified by a few different means:

  • middle-clicking the object in the scene graph and dragging it to the location text field;
  • clicking the down arrow to the right of the location text field and choosing the relevant item to adopt the current selection of the node graph or the scene graph;
  • typing in a scene graph location or an expression designating one in the location text field.

Note that the assigned object should have its scene graph location defined by node placed upstream in the node graph.

Camera Settings

Shutter Opening Efficiency
Shutter Closing Efficiency

Sets how “efficient” the shutter of the camera is at opening and closing times. ‘1.0’ is maximum efficiency, meaning that the shutter of the camera opens instantaneously, and then closes instantaneously, which is a non-natural shutter. Lower values, such as the default value of ‘0.75’, will simulate slower opening camera shutter and produces softer motion blurs, closer to what is expected in real life cameras.

Lens Aperture

Use Finite Number of Blades

Turning this attribute on allows customization of the aperture shape using the following attributes. This attribute is off by default, which produces a perfectly round aperture.

Number of Blades

The aperture is shaped after a regular polygon; this attribute specifies how many sides this polygon has. This can also been seen as the number of blades of the diaphragm that controls the aperture. The minimum number of blades is 3, which produces triangular out-of-focus highlights. 

Rotation

The angle of the rotation to apply on the aperture, in degrees.

Distortion Map

This is a lens distortion map which makes it easier to match a specific live camera.

Camera lens distortion is sometimes done in a post-processing step but this necessitates to render images at a larger resolution, which is wasteful. Using the Distortion Map is the most efficient mean to accomplish this effect and also produces better quality.

F-stop

Specifies the camera aperture.

Focal Length

The len's focal length, in millimeters.

Focal Distance

The distance at which objects in front of the camera will be in focus.

Projection

Projection Type

Several projection types are available. The possible values are detailed in the table below.


Option


Description

PerspectiveA perspective camera.
OthographicAn orthographic camera.

Cylindrical

The vertical axis uses a perspective projection. The horizontal axis uses a spherical projection. The horizontal field of view is specified by Auxiliary Field of View.

Fisheye stereopgrahic

A stereographic fisheye projection. Maintains angles.
Fisheye equidistantAn equidistant fisheye projection. Maintains angular distances.
Fisheye equisolidAn equisolid angle fisheye projection. Maintains surface relations.
Fisheye orthographicAn orthographic fisheye projection. Maintains planar illuminance.
SphericalA latitude/longitude spherical projection. Implies a 360 degree field of view.

Auxiliary Field of View

Specifies the horizontal field of view, in degrees, of a Cylindrical projection. This attribute is ignored for the other projection types.


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