Patent ID: 7924342

Claim:
An image sensor that is to be placed at an imaging plane of an optical system and is equipped with imaging pixels disposed in a two-dimensional array, which converts an image formed through the optical system to an electrical signal, comprising: image-capturing pixels that are disposed in the array of the imaging pixels and are used for functions including displaying an image; first focus detection pixel areas each formed by disposing in the array of the imaging pixels a plurality of first pixels adopting a split pupil method and used for focus detection; and second focus detection pixel areas each formed by disposing in the array of the imaging pixels a plurality of second pixels adopting a split pupil method different from the split pupil method adopted in the first pixels and used for focus detection, wherein: a relationship between a number of the first focus detection pixel areas and a number of the second focus detection pixel areas is determined in correspondence to directions of positions of the first focus detection pixel areas and the second focus detection pixel areas relative to a center of the image sensor.