Camera for close-up and normal range photography

Details Camera for close-up and normal range photography Camera for close-up and normal range photography

1981-02-09

1982-02-23

Gellner, Michael L.

354 29, 354 43, 354149, 354196, G03B 300, G03B 7087

Patent

active

043166580

ABSTRACT:
A camera, operable in flash and ambient exposure modes, has adjustable lens apparatus useful for close-up and normal range photography. A photoconductively controlled electromagnet, which is energized in accordance with the intensity of ambient light, controls an apertured blade to adjust an exposure aperture. A mechanism is responsive to adjustment of the lens apparatus for a close-up photograph and overrides the electromagnet. This causes the apertured blade to be moved automatically to its minimum aperture position, independently of the exposure mode, when the camera is set for close-up photography, to enhance depth of field.

REFERENCES:
patent: 3916425 (1975-10-01), Tanaka
patent: 4059836 (1977-11-01), Hochreiter et al.
patent: 4154517 (1979-05-01), Tamura et al.

Affiliated with

Also associated with

Rating

Camera for close-up and normal range photography does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Camera for close-up and normal range photography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Camera for close-up and normal range photography will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1772228