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This page gives details on how the V-Ray Camera works in Nuke.
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Overview
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The VRayCamera allows you to use real-world parameters to set up the virtual CG camera (e.g. f-stop, shutter speed, etc). It also makes it easier to use light sources with real-world illumination such as VRayLight with physical units, or VRaySun and VRaySky.
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axis – An optional Axis node input. This links the position, rotation, scale, and skew of the transformed 3D object(s) to the Axis node, so that the transformation controls on the Axis node override the corresponding controls on the TransformGeo node.
Basic Settings Tab
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Read from Nuke camera – Enables camera information to be read from a standard Nuke Camera. A Nuke camera needs to be attached to the VayCamera's axis attribute.
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None – The image is not squeezed or stretched to fit. One of its axes (determined by the Fit fill setting) fits to the film gate, and the other resizes appropriately.
Match camera film gate – Squeezes the image to fit the film gate.
Match camera resolution – If you use this to match a backdrop, match these settings to the settings in the image plane. Usually, the image plane is the same size as the rendered image. If so, use the Match Camera Resolution setting.
Physical Tab
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Common Camera Parameters
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Film gate (in mm) – Specifies the horizontal size of the film gate in millimeters. Note that this setting takes into account the system units configuration to produce the correct result.
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Focus distance – Sets the focus distance of the camera.
Basic Physical parameters
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Enable VRay Physical camera – Enables the camera to act as a VRay Physical camera, and enables the remaining parameters in this rollout.
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Affects exposure – When enabled, the size and shape of the aperture specified in the Aperture map affects the exposure of the final image.
Stereoscopy Tab
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The Stereoscopic Camera tabs provide parameters to create a stereoscopic rendering from any camera in the scene. The attributes define two virtual cameras based on the current camera, one for each in a pair of stereoscopic images, and control the parameters necessary for a stereoscopic rendering.
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