Single lens mirror reflex camera with automated aperture and tim

Details Single lens mirror reflex camera with automated aperture and tim Single lens mirror reflex camera with automated aperture and tim

1978-09-19

1979-10-30

Gellner, Michael L.

354 46, 354 60L, 354286, G03B 1714, G03B 1720

Patent

active

041726510

ABSTRACT:
A single lens mirror reflex camera with spring biased diaphragm and with exposure metering and controlling system having a central operation mode selection switch for switching between several operation modes, is improved by providing indicators at the camera which are switched in when the "automatic aperture" operation mode is selected and are recognized as warning displays by the user, and by providing switching means at the stop preselection ring of the objective and at the camera, which turn off the indicators in the camera proper when the smallest aperture is set at the stop preselection ring.

REFERENCES:
patent: 3427946 (1969-02-01), Broschke et al.
patent: 4118726 (1978-10-01), Kuramoto et al.

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