Stereo camera apparatus and method of obtaining image

A stereo camera apparatus for obtaining distance information of an object includes a camera unit that includes a left image sensor and a right image sensor respectively obtaining a left-side image and a right-side image, each being composed of a frame including plural pixels of plural rows and plural columns, the left image sensor and the right image sensor sequentially exposing the pixels of the rows from upper to lower in the frames, respectively; a shift amount detection unit that detects a relative positional shift amount in the vertical direction between a left-side image and a right-side image; and a timing control unit that changes the starting time of exposing the frame by the left image sensor or by the right image sensor based on the positional shift amount in the vertical direction detected by the shift amount detection unit.