Image capturing apparatus which improves focus detection accuracy by using an image sensor having a pupil division function

An image capturing apparatus comprising:

• a pixel array in which pixels are arranged in a matrix and in which a plurality of column output lines including a first column output line and a second column output line are arranged for each column of the pixels of a plurality of pixel columns;
• and
• a readout circuit configured to read out signals from the pixels via the plurality of column output lines,
• wherein the readout circuit performs a first read-out scan of reading out signals via the first column output line from a first pixel group of the pixel array, and a second read-out scan of reading out signals via the second column output line from a second pixel group different from the first pixel group of the pixel array, and the readout circuit reads out an image signal by the first read-out scan, and reads out a phase-difference signal by the second read-out scan.

An image capturing apparatus comprising:

• a pixel array in which pixels are arranged in a matrix and in which a plurality of column output lines including a first column output line and a second column output line are arranged for each column of the pixels of a plurality of pixel columns;
• and
• a readout circuit configured to read out signals from the pixels via the plurality of column output lines,
• wherein the readout circuit performs a first read-out scan of reading out signals via the first column output line from a first pixel group of the pixel array, and a second read-out scan of reading out signals via the second column output line from a second pixel group different from the first pixel group of the pixel array, and the readout circuit reads out a phase-difference signal by the first read-out scan, and reads out a photometric signal by the second read-out scan.