The appearance of digital cameras is the product of a modern communications and computer industries, the rapid development of photographic products industry. With the universalling of the telecommunications, computer products，digital cameras can be applicated in more and more areas. The number of pixels of digital camera, exposure mode, additional functions have been condensered when we buy a digital camera. The digital camera control system has been in developmentbecause of the growing demands.
The design of the system has two aspects of study design of hardware and software. I will complete the schematic design as Hardware, the selection of devices, control circuits, drive circuitry, isolation circuitry, such as module design as Hardware; I will study the mathematical model of image focus, focus on the choice of control strategy, drive motor, such as software modules design. Hardware circuit will be designed by Protel schematic and PCB documents; flow chart and flow chart of the module will been written.
