Distance metering device of a camera
AssigneeNikon Corporation
InventorsYoshikazu Iida, Toru Kosaka, Hiroyuki Tsuru, Riichi Higaki, Akira Katayama
Life of this patent
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Abstract
A distance metering device of a camera eliminates a troublesome re-setting operation when a remote controller is used as a cable release and avoids the creation of defocused photograph when the remote controller is used as a self-timer. When a first remote control signal receiver is selected, that is, when the remote controller is to be used as the self-timer, a distance metering mode of a multi-point distance metering device is forcibly switched to a multi-point distance metering mode, and when a second remote control signal receiver is selected, that is, when the remote controller is to be used as the cable release, the forced switching is not done.
Claims2
A distance metering device of a camera comprising:
- multi-point distance metering means having a multi-point distance metering mode for metering distances to a plurality of points in a photographing field and a one-point distance metering mode for metering a distance to only one point;
- first remote control signal receiving means having a directivity to the photographing field, for receiving a signal transmitted from a remote control transmitter;
- second remote control signal receiving means having a receiving sensitivity to a remote control transmitter located outside of the photographing field;
- remote control signal receiver selection means for selecting one of said first and second remote control singal receiving means;
- and
- control means for forcibly switching the distance metering mode of said multi-point distance metering means to the multi-point distance metering mode when said first remote control signal receiving means is selected by said remote control signal receiver selection means.
A distance metering device of a camera comprising:
- multi-point distance metering means having a multi-point distance metering mode for metering distances to a plurality of points in a photographing field and a one-point distance metering mode for metering a distance to only one point;
- first remote control signal receiving means having a directivity to the photographing field, for receiving a signal transmitted from a remote control transmitter;
- second remote control signal receiving means having a receiving sensitivity to a remote control transmitter located outside of the photographing field;
- compare means for comparing magnitudes of signals transmitted from said remote control transmitter to said first remote control signal receiving means and said second remote control signal receiving means;
- and
- control means for forcibly switching the distance metering mode of said multi-point distance metering means to the multi-point distance metering mode when said compare means determines that the signal received by said first remote control signal receiving means is larger.
Dependencies are inferred from the claim text.