An image processing circuit capable of shooting a desired subject is provided in which increasing the size of the digital camera has been avoided. Sensor control unit 31 includes a moving image mode and a still image shooting mode. If a shutter button is operated when sensor control unit is driven in the moving image mode in which mechanical shutter 21 is open, image pickup control unit 37 stops the operation of sensor control unit. Then, after exposing image sensor 23 for a predetermined exposure time, image pickup control unit 37 closes mechanical shutter 21. Additionally, image pickup control unit 37 switches sensor control unit 31 to the still image shooting mode while mechanical shutter 21 is closed.