Camera having automatic exposure bracketing device
AssigneeCanon Kabushiki Kaisha
InventorHiroshi Matsushima
Life of this patent
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Abstract
This invention provides a camera having an automatic exposure bracketing device for performing photography while sequentially altering an exposure value for exposure of each frame. According to the invention, the camera is capable of selectively operating in a mode for performing continuous photography for a plurality of frames under photographic conditions by a single depression of a release button and a mode for repeatedly performing photography while the release button is being depressed.
Claims18
A camera provided with an automatic exposure bracketing photography controlling circuit for performing photography while automatically altering an exposure value for exposure of each frame, comprising:
- a) a setting circuit for setting a photographic condition;
- and
- b) a selecting circuit for selectively determining a control state of said automatic exposure bracketing photography controlling circuit in accordance with the photographic condition set by said setting circuit, said automatic exposure bracketing photography controlling circuit having a first mode for performing continuous photography for a predetermined number of frames while altering an exposure value for each of the frames by a single operation of a release operation member and a second mode for continuously performing photography while alternating an exposure value for each frame as long as the release operation member is being operated, said selecting circuit selecting the first mode if the set photographic condition is a single shooting mode in which photography of each frame is performed each time the release operation member is operated and the second mode if the set photographic condition is a continuous shooting mode in which photography is continuously performed while the release operation member is being operated.
A camera provided with an autofocus device having a one-shot autofocus mode and a servo autofocus mode, and an automatic exposure bracketing photography controlling circuit for performing photography while automatically altering an exposure value for exposure of each frame, comprising:
- a) a setting circuit for setting a photographic condition;
- and
- b) a selecting circuit for selectively determining a control state of said automatic exposure bracketing photography controlling circuit in accordance with the photographic condition set by said setting circuit, said automatic exposure bracketing photography controlling circuit having a first mode for performing continuous photography for a predetermined number of frames by a single operation of a release operation member and a second mode for continuously performing photography while altering an exposure value for each frame as long as the release operation member is being operated, said selecting circuit selecting the first mode if the set photographic condition is a one-shot autofocus mode utilizing the autofocus device and the second mode if the set photographic condition is a servo autofocus mode utilizing the autofocus device.
A camera having a single shooting mode for performing photography each time a release operation member is operated and a continuous shooting mode for continuously performing photography while the release operation member is being operated, comprising:
- a) an automatic exposure bracketing photography controlling circuit having a first mode for performing continuous photography for a plurality of frames while altering an exposure value for each frame by a single operation of the release operation member and a second mode for continuously performing photography while altering an exposure value for each frame as long as the release operation member is being operated;
- and
- b) a selecting circuit for selecting the first mode when photography is performed in the single shooting mode and the second mode when the photography is performed in the continuous shooting mode.
A camera having an autofocus device having a one-shot autofocus mode in which an autofocus operation is inhibited once in-focus is achieved and a servo autofocus mode in which the autofocus operation is repeatedly performed even if in-focus is achieved before photography, comprising:
- a) an automatic exposure bracketing photography controlling circuit having a first mode for performing continuous photography for a plurality of frames while altering an exposure value for each of the frames by a single operation of a release operation member and a second mode for continuously performing photography while altering an exposure value for each frame as long as the release operation member is being operated;
- and
- b) a selecting circuit for selecting the first mode when the autofocus device is in the one-shot autofocus mode and the second mode when the autofocus device is in the servo autofocus mode.
A camera provided with an automatic exposure bracketing photography controlling circuit for performing photography while automatically altering an exposure value for exposure of each frame, comprising:
- a) said automatic exposure bracketing photography controlling circuit having a first mode for performing continuous photography for a plurality of frames while altering an exposure value for each of said frames by a single operation of a release operation member and a second mode for continuously performing photography while altering an exposure value for each frame as long as the release operation member is being operated;
- and
- b) a selecting circuit for selecting the first mode if the set photographic condition is a single shooting mode in which photography of each frame is performed each time the release operation member is operated and the second mode if the set photographic condition is a continuous shooting mode in which photography is continuously performed while the release operation member is being operated.
A camera having a single shooting mode for performing photography each time a release operation member is operated and a continuous shooting mode for continuously performing photography while the release operation member is being operated, comprising:
- a) an automatic exposure bracketing circuit for performing photography while altering an exposure value;
- and
- b) a control circuit for causing a control state of said automatic exposure bracketing circuit when the single shooting mode is selected to differ from a control state of said automatic exposure bracketing circuit when the continuous shooting mode is selected.
A camera having an autofocus device having a one-shot autofocus mode in which an autofocus operation is inhibited once in-focus is achieved and a servo autofocus mode in which the autofocus operation is repeatedly performed even when if in-focus is achieved before photography;
- comprising:
- a) an automatic exposure bracketing circuit for performing photography while altering an exposure value;
- and
- b) a control circuit for causing a control state of said automatic exposure bracketing circuit when said autofocus device is in the one-shot autofocus mode to differ from a control state of said automatic exposure bracketing circuit when said autofocus device is in the servo autofocus mode.
Dependencies are inferred from the claim text.