Image pickup apparatus, method of controlling image pickup apparatus, and non-transitory computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorsTakashi Kosaka, Koji Inoue
Life of this patent
Estimating the term…
Abstract
An image pickup apparatus includes an image pickup element configured to photoelectrically convert an optical image, and a controller configured to control a drive of a focus lens based on a signal outputted from the image pickup element and control a frame rate to drive the image pickup element, and the controller is configured to detect an in-focus position based on a signal outputted from the image pickup element which is driven at a first frame rate, and to switch the frame rate of the image pickup element to a second frame rate lower than the first frame rate while performing a first operation to drive the focus lens to the in-focus position.
Claims12
An image pickup apparatus comprising:
- an image pickup element configured to photoelectrically convert an optical image;
- a first detection unit configured to perform focus detection by using a focus signal generated from a high frequency component of an image signal outputted from the image pickup element;
- a second detection unit configured to perform focus detection by a method different from the focus detection by the first detection unit;
- and
- a controller configured to control a drive of a focus lens and configured to control a frame rate,
- wherein when a predetermined operation to instruct focusing is performed, the controller is configured to switch the frame rate from a first frame rate to a second frame rate, which is faster than the first frame rate, and perform a first operation to drive the focus lens for the focus detection by the first detection unit,
- wherein the controller is configured to start driving the focus lens based on a focus detection result by the second detection unit before completion of switching the frame rate from the first frame rate to the second frame rate.
An image pickup apparatus comprising:
- an image pickup element configured to photoelectrically convert an optical image;
- a detection unit configured to perform focus detection by using a focus signal generated from a high frequency component of an image signal outputted from the image pickup element;
- and
- a controller configured to control a drive of a focus lens and configured to control a frame rate,
- wherein when a predetermined operation to instruct focusing is performed, the controller is configured to switch the frame rate from a first frame rate to a second frame rate, which is faster than the first frame rate, and perform a first operation to drive the focus lens for the focus detection by the detection unit,
- wherein when the controller determines that the focus lens is near an in-focus position, the controller is configured to start driving the focus lens to a start position of the first operation before completion of switching the frame rate from the first frame rate to the second frame rate.
A method of controlling an image pickup apparatus, the method comprising the steps of:
- converting photoelectrically an optical image in an image pickup element;
- switching, when a predetermined operation to instruct focusing is performed, a frame rate from a first frame rate to a second frame rate, which is faster than the first frame rate;
- performing a first operation to drive a focus lens for focus detection by a first detection unit configured to perform the focus detection by using a focus signal generated from a high frequency component of an image signal outputted from the image pickup element;
- and
- wherein driving the focus lens is started based on a focus detection result by a second detection unit configured to perform focus detection by a method different from the focus detection by the first detection unit before completion of switching the frame rate from the first frame rate to the second frame rate.
A method of controlling an image pickup apparatus, the method comprising the steps of:
- converting photoelectrically an optical image in an image pickup element;
- switching, when a predetermined operation to instruct focusing is performed, a frame rate from a first frame rate to a second frame rate, which is faster than the first frame rate;
- and
- performing a first operation to drive a focus lens for a focus detection by a detection unit configured to perform the focus detection by using a focus signal generated from a high frequency component of an image signal outputted from the image pickup element,
- wherein when it is determined that a focus lens is near an in-focus position, driving the focus lens to a start position of the first operation is started before completion of switching the frame rate from the first frame rate to the second frame rate.
Dependencies are inferred from the claim text.