A digital still camera includes an image pickup device for photographing a subject, and an image processor adapted to drive and control the image pickup device, to process photographic signals outputted from the image pickup device and to record the processed images in a recorder. The image processor includes digitally zooming unit for selected a part of a photographic image plane photographed by the image pickup device and digitally zooming said part of the image. The image pickup device possesses two or more driving modes having respectively different numbers of pixels to be read out from the image pickup device. The digital still camera enables at least either one of monitoring in which restricted pixels are read out from the image pickup device and moving image recording, wherein a driving mode of the image pickup device is so selected as to maintain a resolution obtainable at the number of pixels in monitoring or that in recording moving images.