| 摘要 |
Disclosed in a focus detecting apparatus comprising: a micro lens array arranged with a plurality of micro lenses, a photo detector that has a plurality of detecting elements provided in correspondence with the micro lenses and receives light flux from an optical system via the micro lenses; and a focus detector that selects a pair of groups of detecting elements from the plurality of detecting elements based on an F-value of the optical system and a brightness of the light flux from the optical system and detects a focus adjustment status of the optical system based on a pair of light receiving signals obtained in the groups of detecting elements.
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