Image capturing apparatus, method, and storage medium for reducing noise in images generated from a single exposure and aplified with different gains

A method for controlling an image capturing apparatus including a pixel portion in which a plurality of pixels are arranged, the method comprising:

• amplifying an image signal of pixels in a first every other rows in the pixel portion and an image signal of pixels in a second every other rows between the first every other rows obtained by a single exposure of the pixel portion, with multiple different gains, and acquiring multiple images respectively amplified with the multiple different gains;
• acquiring images for correction that correspond to the multiple different gains;
• and
• correcting the multiple images using the images for correction that correspond to the gains with which the multiple images are respectively amplified.

A non-transitory computer readable storage medium storing a program for causing a computer to execute a method for controlling an image capturing apparatus including a pixel portion in which a plurality of pixels are arranged, the method comprising:

• amplifying an image signal of pixels in a first every other rows in the pixel portion and an image signal of pixels in a second every other rows between the first every other rows obtained by a single exposure of the pixel portion, with multiple different gains, and acquiring multiple images respectively amplified with the multiple different gains;
• acquiring images for correction that correspond to the multiple different gains;
• and
• correcting the multiple images using the images for correction that correspond to the gains with which the multiple images are respectively amplified.