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The Universal camera is a full-featured camera, with support for five different camera mode types:
When you select the Universal Camera as the camera type in the Render Target's Main tab, the following parameters are available in the Universal Camera tab (Figure 1).
Figure 1: The Universal camera parameters
Fisheye Angle - The camera's field of viewThe area that is visible to a camera lens usually measured in millimeters. A wide angle lens provides a larger field of view and a telephoto lens provides a narrow field of view., measured in degrees.
Fisheye Type - Choose between covering the lens circle in the sensor, or covering the whole sensor.
Hard Vignette - Renders the lens (Circular fisheye only).
Fisheye Projection - The projection function used for the fisheye.
Equirectangular (Panoramic) Parameters
Horizontal Field of View - The horizontal field of view, in degrees. This sets the X-coordinate for the camera's horizontal field of view in the scene. This is ignored when cube mapping is used.
Vertical Field of View - The vertical field of view, in degrees. This sets the Y-coordinate for the camera's vertical field of view in the scene. This is ignored when cube mapping is used.
Cubemap Layout - Determines the configuration for laying out the cubemap.
Equi-angular Cubemap - Activates an equi-angular cubemap projection.
Use Distortion Texture - Enables the distortion texture.
Spherical Distortion - The amount of spherical distortion.
Barrel Distortion - Straight lines appear curved.
Barrel Distortion Corners - Straight lines appear curved, affecting corners.
Spherical Aberration - Rays hitting the edge of the lens focus closer to the lens.
Coma - Rays hitting the lens edge have a larger field of view.
Astigmatism - Sagittal and tangential rays focus at different distances from the lens.
Field Curvature - The curvature of the plane in focus.
Depth of FieldThe distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image. Although a lens can precisely focus at only one distance at a time, the decrease in sharpness is gradual on each side of the focused distance, so that within the DOF, the unsharpness is imperceptible under normal viewing conditions. source: wikipedia (https://en.wikipedia.org/wiki/Depth_of_field)
Auto-Focus - Keeps the focus on the closest visible surface at the center of the image, regardless of the aperture, the aperture edge, and focal depth values. This setting is on by default.
ApertureDetermines how much light enters a camera lens. A large aperture produces a narrow depth of field and a small aperture produces a wide depth of field. Aspect Ratio - This allows users to squash and stretch the depth-of-field disc.
Aperture Shape - Controls the shape of the aperture.
Aperture Edge - Modifies the relative distribution of rays across the aperture, impacting the hardness of the edges of bokeh shapes. Higher values increase the contrast towards the edge. Values between 0 and 1 simulate an apodization filter.
Aperture Blade Count - The number of blades forming the iris diaphragm.
Aperture Rotation - The rotation of the aperture shape in degrees.
Aperture Roundedness - The roundness of the blades forming the iris diaphragm.
Central Obstruction - Simulates the obstruction from the secondary mirror of a catadioptric system. This option is only enabled on circular apertures.
Notch Position - Determines the position of the notch on the blades.
Notch Scale - Scale of the notch.
Distance - The distance between the lens and the opening of the lens barrel.
Scale - The scale of the opening of the lens barrel relative to the aperture.
Enable Split-Focus Diopter - Enables the split-focus diopter.
Diopter Focal Depth - Depth of the plane in focus measured in meters.
Diopter Rotation - Rotation of the split-focus diopter in degrees.
Diopter Translation - Translation of the split-focus diopter.
Diopter Boundary Width - Width of the boundary between the two fields.
Diopter Boundary Falloff - Controls how quickly the Split-Focus diopter focal depth blends into the main focal depth.
Show Diopter Guide - Displays guide lines, toggling this option on or off will restart the render.
Keep Upright - If enabled, the camera is always oriented towards the horizon and the up-vector will stay (0,1,0).
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