Imaging apparatus and method for controlling same

摘要

A control device acquires a focus detection signal from a pixel portion of the imaging element so as to detect a focus state by phase difference detection. A camera control unit performs focus adjustment control by the drive control of a focus lens constituting an imaging optical system. The camera control unit performs exposure control for adjusting the brightness of an object in the focus area to an appropriate level, and determines whether or not the brightness level of the object in the focus area is saturated based on the focus detection signal. When the exposure state during a focus adjustment operation is not in an appropriate state, the camera control unit calculates an exposure correction value and determines whether or not the exposure correction value falls within the exposure control range. When the exposure correction value falls within the exposure control range, the exposure state is readjusted.

主权项

1. A control device comprising:
a detecting unit configured to acquire an output signal from an imaging unit having an imaging element so as to perform phase difference type focus detection, wherein the imaging element outputs a signal photoelectrically converted at a predetermined cycle; a determination unit configured to determine whether or not an output signal for phase difference type focus detection from the imaging unit is saturated; and a control unit configured to perform exposure control of the imaging element and to perform focus adjustment control of an imaging optical system with respect to an object by acquiring detection information from the detecting unit, wherein the control unit performs the focus adjustment control so as to move a focus lens comprised in the imaging optical system from a first position to a second position different from the first position, and performs exposure control when the determination unit determines that the output signal for the phase difference type focus detection from the imaging unit is saturated, and wherein the determination unit determines whether or not the output signal for the phase difference type focus detection from the imaging unit which is acquired when the focus lens is positioned at the first position is saturated and determines whether or not the output signal for the phase difference type focus detection from the imaging unit which is acquired when the focus lens is positioned at the second position is saturated.