The Sony DSC-P51 was introduced in 2002 along with the P71 and P31. The camera sports a 2-megapixel sensor that captures 1,600 x 1,200 images for prints at sizes up to 8 x 10 inches. It has an autofocus lens with 2x optical zoom and 6x digital zoom. It is capable of connecting with PCs and Macs via USB port and uses two AA batteries. Rechargeable nickel-metal hydride (NiMH) batteries were included with new camera but the camera will accept alkaline batteries and also included is a MSA-16A 16MB Memory Stick media, BC-CS1 charger, video and USB cables, wrist strap, and software on CD. The maximum ISO is 400 and the minimum is 100. The camera has a built in flash, TTL metering, auto plus manual focusing, USB serial interface, 8 cm macro focus range, aperture range f3.8 to f8.0, 2 seconds to 1/1000 of a second shutter speeds, 41 mm focal length, self-timer, movie mode (silent), red eye reduction, and a tunnel type optical viewfinder. Though the P51 is designed for point-and-shoot simplicity, there are several options for more adventurous photographers, including manual focus with macro, adjustable ISO and white-balance settings, exposure compensation, and the ability to shoot black-and-white, sepia, solarized, and negative images. The maximum memory stick the camera can work with is 128mb.