Imaging apparatus and control method
AssigneeCanon Kabushiki Kaisha
InventorsNaoyuki Nakagawara, Atsushi Sugawara
Life of this patent
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Abstract
In one or more embodiments, exposure control of an image sensor is performed based on a movement characteristic of a shutter configured to be movable to a position at which the image sensor is shielded from light and to a position at which the image sensor is not shielded from light. A moving speed of the shutter may change during movement, and a light amount change characteristic of light from an object may be calculated by a calculation unit. In one or more embodiments, the calculation unit calculates a timing when a light from an object satisfies a predetermined condition.
Claims22
An imaging apparatus comprising:
- an image sensor;
- a shutter configured to be movable to a position at which the image sensor is shielded from light, and to a position at which the image sensor is not shielded from light, wherein a moving speed of the shutter changes during movement;
- a calculation unit configured to calculate a light amount change characteristic of light from an object;
- and
- a control unit configured to perform exposure control of the image sensor based on a movement characteristic of the shutter and the light amount change characteristic calculated by the calculation unit.
An imaging apparatus comprising:
- an image sensor;
- a shutter configured to be movable to a position at which the image sensor is shielded from light, and to a position at which the image sensor is not shielded from light, wherein a moving speed of the shutter changes during movement;
- a calculation unit configured to calculate a timing when a light from an object satisfies a predetermined condition;
- and
- a control unit configured to perform exposure control of the image sensor,
- wherein the control unit is configured to change an imaging area of the image sensor to be exposed according to the timing when the light from the object satisfies the predetermined condition, according to an orientation of the imaging apparatus.
An imaging apparatus comprising:
- an image sensor;
- a calculation unit configured to calculate a timing when a light from an object satisfies a predetermined condition;
- and
- a control unit configured to perform exposure control of the image sensor,
- wherein the control unit is configured to start to expose regions of the image sensor at a different timing for each region of the regions of the image sensor, and
- wherein the control unit is configured to, in a case of starting to expose the regions of the image sensor sequentially so that differences in exposure start timing between neighboring regions of the image sensor are not constant, perform the exposure control of the image sensor so that a center timing of an exposure period of a center region of an imaging area of the image sensor differs from the timing when the light from the object satisfies the predetermined condition.
An exposure control method of an imaging apparatus including an image sensor, and a shutter configured to be movable to a position at which the image sensor is shielded from light and to a position at which the image sensor is not shielded from light, wherein a moving speed of the shutter changes during movement, the exposure control method comprising:
- calculating a light amount change characteristic of light from an object;
- and
- performing exposure control of the image sensor of the imaging apparatus based on a movement characteristic of the shutter of the imaging apparatus and the calculated light amount change characteristic.
An exposure control method of an imaging apparatus including an image sensor, and a shutter configured to be movable to a position at which the image sensor is shielded from light and to a position at which the image sensor is not shielded from light, wherein a moving speed of the shutter changes during movement, the exposure control method comprising:
- calculating a timing when a light from an object satisfies a predetermined condition;
- and
- performing exposure control of the image sensor of the imaging apparatus, wherein an imaging area of the image sensor to be exposed is changed according to the timing when the light from the object satisfies the predetermined condition, according to an orientation of the imaging apparatus.
An exposure control method of an imaging apparatus including an image sensor, the exposure control method comprising:
- calculating a timing when a light from an object satisfies a predetermined condition;
- and
- performing exposure control of the image sensor of the imaging apparatus,
- wherein each region of a plurality of regions of the image sensor is started to be exposed at a different timing for each of the regions, and
- wherein, if the regions of the image sensor are started to be exposed sequentially so that differences in exposure start timing between neighboring regions of the image sensor are not constant, the exposure control of the image sensor is performed so that a center timing of an exposure period of a center region of an imaging area of the image sensor differs from the timing when the light from the object satisfies the predetermined condition.
Dependencies are inferred from the claim text.