Patent ID: 6336754
Filing Date: 2002-01-08
Classification: G03B

Abstract:
A camera body to which a photographic lens is attached, a data exchange being carried out by communicating with said photographic lens via a plurality of contact pins electrically connected to each other, said camera body comprising:a reset pin, as one contact pin of said plurality of contact pins, that outputs at least one of a reset signal and a reset release signal; an identifying pin, as another contact pin of said plurality of contact pins, that is used to identify an attached photographic lens; and an identifying device that identifies whether said attached photographic lens is one of a photographic lens provided with a control device, which is activated after a predetermined time lapses from an output of a reset release signal, and a photographic lens not provided with said control device, in accordance with a time from an output of said reset release signal output by said reset pin until an electrical potential of said identifying pin changes, wherein a data communication between said photographic lens and said camera body is set in accordance with said photographic lens identified to be attached to said camera body.