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The Physical Camera tab contains settings controlling the V-Ray Physical Camera.

Main – This tab contains settings for controlling the basic parameters of the V-Ray Physical Camera, such as exposure, ISO, shutter speed, white balance, and many others.

Depth of Field – This tab contains settings for controlling the depth of field.

Motion Blur – This tab contains settings for controlling the motion blur of the V-Ray Physical Camera.

Distortion – This tab contains settings for controlling the distortion sampling for the V-Ray Physical Camera.

For more information on the parameters included in each tab, see the V-Ray Physical Camera page.

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Please note that V-Ray computes the geometry samples based on the Shutter Open and Shutter Close values (Camera LOP > Sampling) - if the Shutter Open and Shutter Close values are in a very low range such as [-0.1, 0.1] for example, but the Shutter Angle and Shutter Offset (Camera LOP > V-Ray tab > Main tab) are set to [360, -180] which is an entire frame's duration, there won't be enough geometry samples for the motion blur, and it will be cut off.

The simplest solution is to make sure the Shutter Open and Shutter Close are [-1, 1] and then control the actual motion blur effect duration from the V-Ray's Shutter Angle and Shutter Offset parameters.

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