Page 1:Intro and Highlights

• Dynamic mirror damping ("Active Mirror Control") for very short viewfinder blackout and low vibration.
• Improved shutter durability, rated at 200,000 shutter cycles in the EOS-1D Mark II.
• Wireless TTL flash capability.
• Ultra-rugged magnesium alloy chassis.
• 8.5-megapixel, high-sensitivity, large single-plate CMOS sensor (8.2 million active pixels) delivering image resolutions as high as 3,504 x 2,336 pixels.
• TTL optical viewfinder (100 percent field of view) with full information display.
• Lens mount compatible with Canon EF lenses.
• 45-point autofocus area, with One-Shot AF and AI Servo AF modes.
• Program AE, Shutter Priority, Aperture Priority, Manual, and Bulb exposure modes.
• Shutter speeds from 1/8,000 to 30 seconds, with Bulb mode for unlimited exposure times.
• Sensitivity equivalents from ISO 50 to 3,200. (Default range is 100 to 1,600. Expanded range from 50 to 3,200 is a menu option.)
• 21-zone Evaluative Metering system, as well as conventional Center-Weighted, Partial (large spot), Spot (both Center Spot and AF Area-linked), Multi-Spot, and FEL (Flash Exposure Lock) metering systems.

Source : http://www.imaging-resource.com