| 摘要 |
PURPOSE:To accurately transmit information on a photographing distance to a camera body. CONSTITUTION:This photographic lens device can be attached to a camera main body, and transfers data to the side of the camera main body via an electrical contact point connected when the camera main body is attached, and has an encoder device 113 detecting an absolute position on the optical axis of a focus lens group, storage means 107 and 109 photographing distance data for showing a set photographing distance corresponding to the output of the encoder 113, and photographing distance error data corresponding to the quantity of an error in the actual photographing distance and the set photographing distance shown by the photographing distance data, and an output device 105 outputting the photographing distance data and the photographing distance error data. |
