Disclosed herein is a camera system including: a camera section including a subband dividing section configured to resolve image data of a color whose pixel positions are alternately shifted from each other into subband images, and a first transmission interface section configured to convert the subband images into a predetermined image signal, and output the image signal via a transmission line; and a camera control section including a second transmission interface section configured to convert the image signal input via the transmission line into the subband images, and an image decompressing section configured to decompress the subband images into the image data and synthesize the subband images into the image data output from the image pickup element.