Imaging device which adjusts the ratio of color excitation values produced by an image pickup element in accordance with an exit pupil position and the size of an aperture

摘要

An imaging device which includes an optical unit passing light from a subject and having an exit pupil position. An image pickup element receives the light from the subject passing through the optical unit, and produces an image signal from the received light. The image signal has corresponding color excitation values. A color compensation mechanism adjusts a ratio of the color excitation values of the image signal produced by the image pickup element by adjusting at least one of the color excitation values in correspondence with the exit pupil position of the optical unit. Further, the imaging device can include an aperture positioned between the optical unit and the image pickup element to limit the amount of light received by the image pickup element from the optical unit. The size of the aperture is adjustable. The color compensation mechanism can then adjust a ratio of the color excitation values of the image signal produced by the image pickup element by adjusting at least one of the color excitation values in correspondence with the size of the aperture.