Single-lens reflex camera system

Optical: systems and elements – Prism – With reflecting surface

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Details

35419512, 354286, 359827, G03B 300, G03B 1318

Patent

active

050651757

ABSTRACT:
An autofocus system for a single-lens-reflex camera system, in which an autofocus operation is executed in cooperation with a camera body and a lens unit mounted to the camera body. The amount of cooperation between the lens unit and camera body is determined by the camera body, and depends upon the performance of the lens unit mounted thereto. Where the lens unit is equipped with a computing means and a lens drive means, the camera body merely detects a defocus amount and sends it to the lens unit so that a focusing operation can be executed by the lens unit itself.

REFERENCES:
patent: 4841327 (1989-06-01), Yamamoto et al.
patent: 4945376 (1990-07-01), Kawasaki et al.

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