Image capturing apparatus, method of controlling the same, and storage medium

A method of controlling an image capturing apparatus, comprising:

• executing phase difference detection of detecting a phase difference in a first direction of an optical image by light having passed through different pupil regions of an optical system and a phase difference in a second direction different from the first direction;
• executing focus detection of detecting a focusing state based on at least one of the phase difference in the first direction and the phase difference in the second direction and acquiring reliability of the focusing state;
• performing focus adjustment by driving the optical system based on the focusing state detected by the focus detection;
• and
• controlling the focus adjustment not to perform the focus adjustment based on the phase difference in the second direction until the reliability of the focusing state detected based on the phase difference in the second direction becomes higher than a predetermined value in a case of transitioning from a first state in which focus adjustment is performed based on the phase difference in the first direction to a second state in which focus adjustment is performed based on the phase difference in the second direction.

A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method of controlling an image capturing apparatus, the method comprising:

• executing phase difference detection of detecting a phase difference in a first direction of an optical image by light having passed through different pupil regions of an optical system and a phase difference in a second direction different from the first direction;
• executing focus detection of detecting a focusing state based on at least one of the phase difference in the first direction and the phase difference in the second direction and acquiring reliability of the focusing state;
• performing focus adjustment by driving the optical system based on the focusing state detected by the focus detection;
• and
• controlling the focus adjustment not to perform the focus adjustment based on the phase difference in the second direction until the reliability of the focusing state detected based on the phase difference in the second direction becomes higher than a predetermined value in a case of transitioning from a first state in which focus adjustment is performed based on the phase difference in the first direction to a second state in which focus adjustment is performed based on the phase difference in the second direction.