The 4.0 Digital Elph in the Canon's PowerShot line, the compact S400 was the successor to the popular S200, S230, and S330 models. It has a 4-megapixel sensor, 3x optical zoom, an improved 3.6x digital zoom, and movie mode for videos of up to three minutes. A stainless steel shell protects the camera, while a new finish mixes metals and ceramics to produce a tough cool-toned exterior. Featuring a 4.0 megapixel CCD sensor, the PowerShot S400 delivers a wide range of detail and color (with images up to 2,272 x 1,704 pixels) and prints beyond 11 by 14 inches. Canon's high-quality 3x optical zoom lens (36-108mm, f/2.8-4.9) and the 3.6x digital zoom allows for a combined 10.8x zoom. The PowerShot S400 also features Canon's nine-point AiAF (Artificial intelligence Auto Focus) system for focusing accuracy, shutter speeds of 15 to 1/2,000 of a second, and fast sequence shooting at a rate of 2.5 frames per second (fps). With the movie mode you can shoot up to three minutes of MPEG video at resolutions up to 320 x 240 pixels with sound, editing controls, and VCR-like playback. The camera can also attach voice memos or sound files of up to 60 seconds to each image. Some features are you can select from evaluative, center-weighted, plus spot-metering modes depending on the subject matter, and can even choose to set shutter speeds and apertures manually. An ISO range of 50 to 400 ensures practical shutter speeds in a wide variety of lighting situations, while a multifunctional, built-in flash offers a maximum reach of 3.5 meters in Auto ISO mode. Other features are a 1.5-inch TFT (trans reflective) LCD monitor, built-in flash (with auto, on, off, manual, slow-synch, plus red-eye reduction modes), shot modes (manual, auto, plus stitch assist), white balance (daylight, cloudy, tungsten, fluorescent, plus more), histogram display for checking exposure plus contrast levels in images stored on the memory card, Built-in orientation sensor automatically rotates portrait pictures (these images remain rotated when downloaded), CompactFlash memory card slot (Type I only), USB connectivity, and a ¼ inch 20 thread per inch tripod socket. The camera is powered by a rechargeable lithium-ion battery NB-1LH and the price when new in 2003 was $150.00.