Automatic focusing system for a still video camera

摘要

An automatic focusing system for a still video camera has a light detector for outputting an image signal corresponding to an intensity of light which is incident on the light detector. An image signal is output for each of a plurality of colors of light that are incident on the light detector. The autofocusing system also includes a processor for determining the value of an AF signal corresponding to the focus condition of each of the image signals. A controller executes the autofocus operation. The AF signal having the highest value is used by the controller to execute the autofocus operation.