The Canon EOS-1D Mark III has a 10.1 Megapixel CMOS sensor (APS-H size) with Canon’s EOS Integrated Cleaning System and a 3.0-inch LCD monitor with Canon’s Live View technology. The Self-Cleaning Sensor Unit is used against stray dust that enters the camera and adheres to the image sensor during a lens change. The IR-cut filter cleans itself automatically with ultrasonic vibrations, removing dust from the sensor assembly. The EOS-1D Mark III has a redesigned 100% viewfinder, a new 45-point AF system and can shoot up to 10 fps continuously with a maximum burst of 110 shots. Dual DIGIC III Image Processors work in tandem to speed up every process while refining image quality, a new, lighter body has improved weather sealing and shutter durability. Every facet of the EOS experience has been enhanced with the 1D Mark III. Image Sensor Type – High-sensitivity, high-resolution, single-plate, CMOS sensor Aspect Ratio – 3/2 (Horizontal/Vertical) Color Filter System – RGB primary color filters Recording Format – DCF 2.0 (Exif 2.21) JPEG, RAW and RAW+JPEG simultaneous USB 2.0 Hi-Speed mini-B port NTSC & PAL for video output Viewfinder – Eye-level SLR with fixed pentaprism ISO – Up to 6400 AE Lock applies in One-Shot AF mode with evaluative metering when focus is achieved Optional External Speedlite – E-TTL II autoflash with all EX Series Speedlites Self-timer – 10 seconds, 2 seconds delay Battery Power Source – LP-E4 lithium-ion battery Automatic Battery Check Power Saving – Power turns off after 1, 2, 4, 8, 15 & 30 minutes Back-up Battery – One CR2025 lithium battery Dimensions – Width 6.1 x Height 6.2 x Depth 3.1 inch (156 x 156.6 x 79.9mm) Weight – 40.7 ounces (1155 grams)