Minolta Camera Kabushiki Kaisha

Minolta Camera K.k.

Hiroshi Kojima

Makoto Ando

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, and the respective parts are kept in the interchangeable lens and in the intermediate accessory, respectively.

Interchangeable lens

A converter lens interposed between a camera body and an interchangeable lens and having an engagement means at each of the front and rear ends thereof to prevent interconnection with another converter lens. The interconnection of converter lenses are prevented by the engagement of the engagement means at the front end of one converter lens with the engagement means at the rear end of the other converter lens, thereby preventing any increase in mechanical exposure error.

Intermediate optical device

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.

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Sakai, Japan

Hiroshi Kojima