Patent ID: 8477236

Claim:
A lens apparatus removably mounted onto a camera, the lens apparatus comprising: an image-pickup optical system configured to guide an image pickup light from an object to the camera, the image-pickup optical system including a zoom lens unit that moves during zooming, a focusing lens unit that moves during focusing, and an optical element configured to be inserted into and extracted from a light path of the image-pickup optical system; a controller configured to control operations of the zoom lens unit, the focusing lens unit, and the optical element; and a tally emitting part configured to emit light based on a tally signal obtained from an external system disposed at a different position from the camera and the lens apparatus, wherein the controller is configured to, when the tally emitting part emits light, limit an insertion/extraction of the optical element without limiting the operations of the zoom lens unit and the focusing lens unit, and when the tally emitting part does not emit light, limit none of the operations of the optical element, the zoom lens unit and the focusing lens unit.