Image pickup apparatus, focus detecting method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorYumi Takao
Life of this patent
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Abstract
An image pickup apparatus includes an image sensor configured to capture an object image formed by an imaging optical system, and to acquire a first pair of signals generated by light beams that have passed areas in an exit pupil that are different from each other and arranged in a first direction and a second pair of signals generated by light beams that have passed areas in the exit pupil that are different each other and arranged in a second direction different from the first direction, and a selector configured to select a direction to be used for focus control of the imaging optical system among the first direction and the second direction.
Claims14
An image pickup apparatus comprising:
- an image sensor configured to capture an object image formed by an imaging optical system, and to acquire a first pair of signals generated by light beams that have passed areas in an exit pupil that are different from each other and arranged in a first direction and a second pair of signals generated by light beams that have passed areas in the exit pupil that are different each other and arranged in a second direction different from the first direction;
- and
- a selector configured to select a direction to be used for focus control of the imaging optical system among the first direction and the second direction
- wherein the selector selects the direction to be used based on optical axis information regarding a position of an optical axis of the imaging optical system that is different from a center of the image sensor and information regarding a position of the center of the image sensor.
A focus detecting method for an image pickup apparatus including an image sensor configured to capture an object image formed by an imaging optical system, the focus detecting method comprising the steps of:
- acquiring from the image sensor a first pair of signals generated by light beams that have passed areas in an exit pupil that are different from each other and arranged in a first direction and a second pair of signals generated by light beams that have passed areas in the exit pupil that are different each other and arranged in a second direction different from the first direction;
- and
- selecting a direction to be used for focus control of the imaging optical system among the first direction and the second direction
- wherein the selecting step selects the direction to be used based on optical axis information regarding a position of an optical axis of the imaging optical system that is different from a center of the image sensor and information regarding a position of the center of the image sensor.
Dependencies are inferred from the claim text.