Patent ID: 9667878
Date: 2017-05-30
CPC Classifications: G02B,G03B,H04N

Claim:
1. An image capturing apparatus comprising: an image sensor configured to convert light incident thereon via an imaging optical system into an electric signal and output the electric signal; a control unit configured to control a charge accumulation period for the image sensor; a selection unit configured to select one of a first mode in which the electric signal output from the image sensor is not output as a visible image and a second mode in which the electric signal output from the image sensor is output as a visible image; a photometry unit configured to perform photometry based on the electric signal output from the image sensor; and a focus detection unit configured to perform focus detection based on the electric signal output from the image sensor, wherein the control unit controls the charge accumulation period with an integer multiple of a period of a horizontal synchronization signal, and if the first mode has been selected, sets a minimum accumulation period for the charge accumulation period to a first period, and if the second mode has been selected, sets the minimum accumulation period to a second period that is greater than or equal to the first period.