Interchangeable lens camera system
AssigneeMinolta Camera Kabushiki Kaisha
InventorHiroshi Kojima
Life of this patent
Estimating the term…
Abstract
An intermediate accessory, such as a rear converter, a bellows, and an intermediate ring or the like, can be mounted between an interchangeable lens and a camera body. Information relating to the vignetting amount which takes place in the interchangeable lens is divided in two parts, the respective parts are kept in the interchangeable lens and in the intermediate accessory, respectively.
Claims8
A camera system capable of mounting an intermediate accessory between an interchangeable lens and a camera body, comprising:
- first means, provided in the interchangeable lens, for producing a first signal which corresponds to one part of the vignetting amount occurring in the interchangeable lens when the intermediate accessory is mounted between the interchangeable lens and the camera body;
- second means, provided in the intermediate accessory, for producing a second signal which corresponds to the remainder of said vignetting amount;
- and
- means, provided in the camera body, for calculating an exposure in accordance with both of said first and second signals when the intermediate accessory is mounted between the interchangeable lens and the camera body.
An intermediate accessory capable of being mounted between an interchangeable lens and a camera body, comprising:
- means for receiving a first signal relating one part of the vignetting amount occurring in the interchangeable lens when the intermediate accessory is mounted between the interchangeable lens and the camera body;
- means for producing a second signal relating to the remainder of said vignetting amount;
- and
- means for transmitting said first and second signals to the camera body on which the intermediate accessory is mounted.
Dependencies are inferred from the claim text.