Image pickup apparatus, image pickup system, signal processing method, and non-transitory computer-readable storage medium

An image pickup system comprising:

• an image pickup apparatus;
• and
• a lens apparatus detachably mounted on the image pickup apparatus,
• wherein the image pickup apparatus includes:
• an image pickup element including a plurality of pixels corresponding to a plurality of respective micro lenses, the image pickup element including the first photoelectric conversion portion and the second photoelectric conversion portion that are included in each of the pixels to share a corresponding one of the micro lenses;
• and
• a signal processing unit configured to correct an addition signal of outputs from the first photoelectric conversion portion and the second photoelectric conversion portion included in each of the pixels and a first signal generated from a plurality of signals of the first photoelectric conversion portions corresponding to the micro lens, and
• wherein the signal processing unit is configured to correct the addition signal for each of the pixels and correct the first signal for the first photoelectric conversion portions.

A signal processing method of performing processing on a signal obtained from an image pickup element including a plurality of pixels corresponding to a plurality of respective micro lenses, the image pickup element including a first photoelectric conversion portion and a second photoelectric conversion portion that are included in each of the pixels to share a corresponding one of the micro lenses, the method comprising the steps of:

• acquiring an addition signal of outputs from the first photoelectric conversion portion and the second photoelectric conversion portion included in each of the pixels;
• acquiring a plurality of signals of the first photoelectric conversion portions corresponding to the micro lenses;
• generating a first signal generated from the signals;
• and
• correcting the addition signal for each of the pixels and correcting the first signal for the first photoelectric conversion portions.

A non-transitory computer-readable storage medium that stores a program configured to cause a computer to execute a process of a signal processing method of performing processing on a signal obtained from an image pickup element including a plurality of pixels corresponding to a plurality of respective micro lenses, the image pickup element including the first photoelectric conversion portion and the second photoelectric conversion portion that are included in each of the pixels to share a corresponding one of the micro lenses, the process comprising:

• acquiring an addition signal of outputs from the first photoelectric conversion portion and the second photoelectric conversion portion included in each of the pixels;
• acquiring a plurality of signals the first photoelectric conversion portions corresponding to the micro lenses;
• generating a first signal generated from the signals;
• and
• correcting the addition signal for each of the pixels and correcting the first signal for the first photoelectric conversion portions.