Image capturing apparatus and control method of image sensor
An image capturing apparatus comprising: an image sensor that has a plurality of photoelectric conversion portions corresponding to each of a plurality of microlenses arranged in two-dimensions, and outputs an image signal corresponding to a quantity of incident light; a detection unit configured to detect a moving direction of a subject; a determination unit configured to, in a case where the subject is moving in a main scanning direction, determine to perform divided readout in every predetermined number of rows, and to perform added readout in the rows except for the every predetermined number of rows; and a control unit configured to control the image sensor by switching between the divided readout and the added readout in units of rows based on the determination result.
1. An image capturing apparatus comprising:
an image sensor that has a plurality of pixels, arranged in two dimensions, each having a plurality of photoelectric conversion portions and a microlens, and outputs an image signal corresponding to a quantity of incident light; and
at least one processor or one circuitry which functions as
a detection unit that detects a moving direction of a subject based on the image signal;
a determination unit that, in a case where the moving direction of the subject detected by the detection unit is a main scanning direction, determines to perform first readout in which a pair of signals having parallax and an added signal of the plurality of photoelectric conversion portions are obtained from each pixel in every predetermined number of rows, and to perform second readout in which an added signal of the plurality of photoelectric conversion portions corresponding to each microlens is obtained from each pixel in the rows except for the every predetermined number of rows; and
a control unit that controls the image sensor by switching between the first readout and the second readout in units of rows based on a determination result of the determination unit.
2. The image capturing apparatus according to claim 1 , wherein the determination unit determines to readout more rows by the first readout from rows corresponding to an area where the subject whose moving direction is the main scanning direction is detected than other rows.
3. The image capturing apparatus according to claim 1 , wherein the determination unit determines to perform the first readout in all the rows in a case where the moving direction of the subject is not the main scanning direction.
4. A control method of an image sensor that has a plurality of pixels, arranged in two dimensions, each having a plurality of photoelectric conversion portions and a microlens, and outputs an image signal corresponding to a quantity of incident light, the method comprising:
detecting a moving direction of a subject based on the image signal;
determining, in a case where the detected moving direction of the subject is a main scanning direction, to perform first readout in which a pair of signals having parallax and an added signal of the plurality of photoelectric conversion portions are obtained from each pixel in every predetermined number of rows, and to perform second readout in which an added signal of the plurality of photoelectric conversion portions corresponding to each microlens is obtained from each pixel in the rows except for the every predetermined number of rows; and
controlling the image sensor by switching between the first readout and the second readout in units of rows based on a result of the determination.