Front conversion lens system

Details Front conversion lens system Front conversion lens system

1986-12-16

1988-06-07

Corbin, John K.

350481, G02B 1502, G02B 904

Patent

active

047492643

ABSTRACT:
The present invention provides a front conversion lens system attachable in front of an objective lens of a camera in which either of a real focal length photographing mode and a pseudo focal length photographing mode in which, an area, in an image recorded in a frame, smaller than a normal printing area printed when selecting the real focal length photographing mode is printed, is selectable, the lens system satisfying the following condition:

REFERENCES:
patent: 2831396 (1958-04-01), Klemt
patent: 3008373 (1961-11-01), Lange

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