1. An imaging apparatus, comprising: a plurality of imaging elements that each form an image by capturing light passed through lenses; a calculation circuit that calculates, for each imaging element, an exposure time and a sensitivity value, the sensitivity value being a sensitivity of the imaging element to the light, the exposure time being a time in which the imaging element is exposed to the light and the calculation circuit calculates the exposure time based on the image acquired by the imaging element and an exposure area of the imaging element in which the light has passed through the lenses; a memory that stores correction information used to correct each of the exposure times and each of the sensitivity values, the correction information including a predetermined exposure time and a predetermined sensitivity value corresponding to the predetermined exposure time; a correction circuit that, for each imaging element, corrects the exposure time and the sensitivity value, when the exposure time corresponds to the predetermined exposure time, according to the correction information to generate a corrected exposure time and a corrected sensitivity value; a setting circuit that sets, for each imaging element, a setting value to control the imaging element, wherein for each imaging element, the setting circuit sets the setting value as the exposure time and the sensitivity value when the exposure time calculated by the calculation circuit does not correspond to the predetermined exposure time, and the setting circuit sets the setting value as the corrected exposure time and the corrected sensitivity value when the exposure time calculated by the calculation circuit corresponds to the predetermined exposure time; a control circuit that controls a simultaneous exposure of the plurality of imaging elements according to the setting values; and an image generating circuit that generates a second image from the images acquired by the plurality of imaging elements.