Patent ID: 9137436
Filing Date: 2015-09-15
Classification: H04N

Abstract:
1. An imaging apparatus comprising: an image sensor; a focus detection unit configured to perform a focus detecting operation according to a phase difference detection method using a pair of light fluxes having passed though different exit pupils of a photographic optical system and detected by the image sensor; an addition unit configured to add outputs of a plurality of pixels positioned in a focus detection area selected in the image sensor; an addition range setting unit configured to set an addition range of the plurality of pixels positioned in the focus detection area; a defocus amount calculation unit configured to calculate a defocus amount based on an image shift amount obtained by the addition unit; and a focus adjustment unit configured to perform a focus adjusting operation using the defocus amount, wherein the addition range setting unit is configured to change the addition range based on an exposure setting value of the photographic optical system or the image sensor, wherein the exposure setting value is an aperture diameter of a diaphragm included in the photographic optical system, and wherein the addition range setting unit is configured to set the addition range larger than a threshold when the diaphragm aperture diameter is larger than a predetermined value and to set the addition range smaller than the threshold when the diaphragm aperture diameter is smaller than the predetermined value.