Patent ID: 7834929

Claim:
An imaging apparatus comprising: an imaging unit configured to photo-electrically convert light of an object image formed by an imaging optical system to generate an image signal; a first detection unit configured to detect an in-focus state of the imaging optical system based on a high-frequency component of the image signal generated by the imaging unit; a sensor configured to generate a signal different from the image signal generated by the imaging unit without using the imaging optical system; and a second detection unit configured to detect an in-focus position of the imaging optical system based on the signal generated by the sensor, wherein the sensor is located such that an amount of overlap between a detection range of the first detection unit and a detection range of the second detection unit at a first object distance is equal to an amount of overlap between those at a second object distance that is close to an infinite distance side compared to the first object distance is more than a predetermined amount of overlap between wide-angle of view and telephoto at a predetermined object distance.