Patent ID: 6741808
Filing Date: 2004-05-25
Classification: G02B,G03B

Abstract:
A camera system comprising:a photographing lens including at least one of a lens memory, in which lens data on said photographing lens is stored, and a lens controller which controls operations of said photographing lens; and a camera body including a body controller which can communicate with at least one of said lens memory and said lens controller; a first power which can be supplied to said photographing lens; and a second power which can be supplied to said photographing lens; wherein said photographing lens can be mounted to, and dismounted from, said camera body; wherein said lens memory and said lens controller operate with said first power and said second power, respectively, when said photographing lens is mounted to said camera body; and wherein said body controller supplies said first power to said photographing lens to drive said lens memory to read out said lens data from said lens memory when said photographing lens is mounted to said camera body, and subsequently disables said lens memory and supplies said second power to said lens controller so that said body controller and said lens controller communicate with each other in the case where said body controller determines, from said lens data read out of said lens memory, that said photographing lens includes said lens controller.