Patent ID: 8917983
Filing Date: 2014-12-23
Classification: G02B,G03B,H04N

Abstract:
1. An image-pickup apparatus to which a lens unit that includes an image-pickup optical system including a focus lens is attachable, the image-pickup apparatus comprising: an image sensor configured to photoelectrically convert an object image formed via the lens unit that has been attached, and to generate an image signal; and a controller configured to generate information on driving of the focus lens in the lens unit based upon the image signal and to provide focus control, the controller communicating data with the lens unit in synchronization with a vertical synchronizing signal by a fixed-length packet communication, wherein the controller instructs first information indicating a command mode, wherein the controller instructs the lens unit on a driving target position of the focus lens when the first information indicates that the command mode is a first mode, and instructs the lens unit on a driving direction and driving speed of the focus lens when the first information indicates that the command mode is a second mode different from the first mode, wherein information on the driving target position of the focus lens is set in a first data area included in data transmitted in the fixed-length packet communication when the first information indicates that the command mode is the first mode, and information on the driving direction of the focus lens is set in the first data area when the first information indicates that the command mode is the second mode.