Patent
1979-09-07
1981-06-30
Miller, Jr., George H.
354 50, 354286, 354 60F, 354149, G03B 708, G03B 720
Patent
active
042759536
ABSTRACT:
In a single lens reflex camera having an interchangeable photographing lens having a first and a second signal member, the camera being usable in combination with an electronic flash unit and having a third signal member, there is provided an exposure parameter information generating circuit which comprises first converter means for converting the mechanical outputs of the first and third signal members into electrical output information, second converter means for converting the mechanical output of the second signal member into electrical output information, an adder circuit for adding the electrical outputs of the first and second converter means and putting out electrical information, a first output terminal for applying the output of the first converter means to an exposure time operation circuit, and a second output terminal for applying the output of the adder circuit to the electronic flash unit.
REFERENCES:
patent: 3742828 (1973-07-01), Nakajima et al.
patent: 4095242 (1978-06-01), Tsunekawa et al.
patent: 4101223 (1978-07-01), Mutsushita
patent: 4118713 (1978-10-01), Murakami et al.
patent: 4187019 (1980-02-01), Uchiyama et al.
Ohtsubo Yoshiaki
Toyoda Kenji
Watanabe Sakuji
Brady W. J.
Miller Jr. George H.
Nippon Kogaku K.K.
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