| 摘要 |
<p>To provide a lens system which is to be used with a virtual system and which can curtail time and labor required by settings of the virtual system by outputting data pertaining to an angle of view, an object distance, and a principal point position, all being required by the virtual system, the lens device of an actual camera used for photographing an actual video to be usedby the virtual system includes a CPU determining information about the angle of view, the object distance, and the principal point position, all being required to set a virtual camera in the virtual system, on the basis of a zoom position and a focus position detected by encoders, and transmits the information to the virtual system.
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