Image capture apparatus and method for controlling the same

An image capture apparatus comprising:

• a focus detection unit configured to detect a defocus amount in an imaging optical system based on a signal obtained from an image sensor;
• an exposure control unit configured to control exposure based on the signal obtained from the image sensor;
• and
• a control unit configured to control driving of a focusing lens based on the defocus amount,
• wherein the defocus amount detection and the exposure control are concurrently performed, and
• if the defocus amount detected by the focus detection unit meets a first condition or a second condition, the first condition being that a difference between a target exposure condition and a current exposure state is greater than or equal to a given value, and the second condition being that it is determined that the defocus amount is based on a signal affected by driving of an aperture in the exposure control, the control unit does not determine that the image capture apparatus is in an in-focus state, during the control of driving of the focusing lens that is based on the defocus amount.

A method for controlling an image capture apparatus, comprising:

• detecting a defocus amount in an imaging optical system based on a signal obtained from an image sensor;
• controlling exposure based on the signal obtained from the image sensor;
• and
• controlling driving of a focusing lens based on the defocus amount,
• wherein:
• the detecting and the controlling exposure are concurrently performed, and
• in the controlling driving, the driving of the focusing lens is differentiated depending on whether (i) the defocus amount detected in the detecting meets a first condition or a second condition or (ii) the defocus amount detected in the detecting does not meet any of the first condition and the second condition;
• the first condition is that it is determined that the defocus amount is based on a signal obtained before the exposure control is completed, and the second condition is that it is determined that the defocus amount is based on a signal affected by driving of an aperture in the exposure control.

A method for controlling an image capture apparatus, comprising:

• detecting a defocus amount in an imaging optical system based on a signal obtained from an image sensor;
• controlling exposure based on the signal obtained from the image sensor;
• and
• controlling driving of a focusing lens based on the defocus amount,
• wherein the defocus amount detection and the exposure control are concurrently performed, and
• if, in the controlling of driving of the focusing lens, the defocus amount detected in the defocus amount detection meets a first condition or a second condition, the first condition being that a difference between a target exposure condition and a current exposure state is within a given value, and the second condition being that it is determined that the defocus amount is based on a signal affected by driving of an aperture in the exposure control, it is not determined that the image capture apparatus is in an in-focus state during the control of driving of the focusing lens that is based on the defocus amount.

A non-transitory computer-readable medium storing a program for causing a computer provided in an image capture apparatus to function as an image capture apparatus comprising:

• a focus detection unit configured to detect a defocus amount in an imaging optical system based on a signal obtained from an image sensor;
• an exposure control unit configured to control exposure based on the signal obtained from the image sensor;
• and
• a control unit configured to control driving of a focusing lens based on the defocus amount,
• wherein:
• the defocus amount detection and the exposure control are concurrently performed, and
• the control unit differentiates control of driving of the focusing lens depending on whether (i) the defocus amount detected by the focus detection unit meets a first condition or a second condition or (ii) the defocus amount detected in the detecting does not meet any of the first condition and the second condition;
• the first condition is that it is determined that the defocus amount is based on a signal obtained before the exposure control is completed, and the second condition is that it is determined that the defocus amount is based on a signal affected by driving of an aperture in the exposure control.

A non-transitory computer-readable medium storing a program for causing a computer provided in an image capture apparatus to function as an image capture apparatus comprising:

• a focus detection unit configured to detect a defocus amount in an imaging optical system based on a signal obtained from an image sensor;
• an exposure control unit configured to control exposure based on the signal obtained from the image sensor;
• and
• a control unit configured to control driving of a focusing lens based on the defocus amount,
• wherein the defocus amount detection and the exposure control are concurrently performed, and
• if the defocus amount detected by the focus detection unit meets a first condition or a second condition, the first condition being that a difference between a target exposure condition and a current exposure state is greater than or equal to a given value, and the second condition being that it is determined that the defocus amount is based on a signal affected by driving of an aperture in the exposure control, the control unit does not determine that the image capture apparatus is in an in-focus state, during the control of driving of the focusing lens that is based on the defocus amount.