Video camera apparatus with distance measurement area adjusted based on electronic magnification

摘要

A video camera includes a gate circuit for extracting a sharpness signal relative to an area which is set in a portion of a picture, a focus adjusting device for performing focus adjustment on the basis of the sharpness signal relative to the area, and an area control circuit for controlling the gate circuit to vary the area in size and determining a size of the area in accordance with the magnification set by an electronic image magnifier which magnifies the image pickup signal from which the sharpness signal is extracted.