The Universal camera is a full-featured camera, with support for:

    • Fisheye
    • Equirectangular
    • Cubemap

Figure 1: Universal Camera parameters

Parameters

Camera Data Node

    • Always use camera resolution - Used the camera view resolution in preview. 


Used as Universal Camera

    • Camera Mode - Select from 3 Camera Projection type. 
      • Fisheye
      • Equirectangular
      • Cubemap
    • Use F-Stop - Use F-Stop setting instead of aperture. 
      • F-Stop - The aperture-to-focal-length ratio.


Viewing Angle

    • Perspective correction - Perspective correction keeps vertical lines parallel if up-vector is vertical.


Fisheye

    • Fisheye angle - The camera's 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.


Panoramic

    • FOV X - 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.
    • FOV Y - 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.


Distortion

    • Use Distortion Texture - Enables the distortion texture.
    • Distortion Texture - The Distortion texture input.
    • Spherical Distortion - The amount of spherical distortion.
    • Barrel Distortion - Straight lines appear curved.
    • Barrel Distortion Corners - Straight lines appear curved, affecting corners.


Aberration

    • 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 Field

    • Autofocus - Keeps focus on the closest visible surface at the center of the image, regardless of the Aperture, Aperture Edge, and Focal Depth values. 
      • Focus Object - If Autofocus is disabled, you need to define the depth-of-field focus point relative to an Object in the scene
      • Focus Distance - If Autofocus is disabled, you need to define the Camera's distance from the focus point.
    • Aperture - The radius of the camera's lens opening, measured in centimeters. Low values have a wide depth-of-field, where everything is in focus. High values have a shallow depth-of-field, where objects in the foreground and background will be out of focus.
    • Aperture Aspect - 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.
    • Custom Aperture - Sets the custom aperture opacity map. The projection type must be set to OSL Delayed UV.


Optical Vignetting

    • Optical Vignette Distance - The distance between the lens and the opening of the lens barrel.
    • Optical Vignette Scale - The scale of the opening of the lens barrel relative to the aperture.


Split-Focus Diopter

    • 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.
    • Translation X and Y - 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.