Single lens reflex camera with interchangeable lens

Details Single lens reflex camera with interchangeable lens Single lens reflex camera with interchangeable lens

1976-10-29

1977-09-27

Gonzales, John

354201, 354202, 354286, G03B 1700, G03B 1912

Patent

active

040514951

ABSTRACT:
A photographic camera of the single lens reflex type, having provision for interchangeable lenses. Whenever a lens is not fully and properly engaged with and seated on the camera, the image on the focusing screen is blurred or altered from the normal image in a way to attract the attention of the photographer, so that he can make immediate correction before losing the opportunity to take the picture he wants.

REFERENCES:
patent: 2618201 (1952-11-01), Brohl et al.
patent: 3540366 (1970-11-01), Noguchi

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