The Canon EOS 5D Mark III is an HDSLR designed to build on the unprecedented success of its predecessor, the Canon EOS 5D Mark II. The 5DMII broke new ground in the world of HD video, offering true high-resolution, cinema-quality video capture for the first time in a DSLR, and started a resolution in cinematography that continues to this day. The 22-megapixel Canon EOS 5D Mark III offers new autofocusing, metering and sensor technology and incorporates feedback from professional users to take this legacy to an entirely new level.

Key features:
· Full frame 36x24mm, 22 megapixel CMOS sensor ISO range 100-25600, expandable to 104,200.
· 14-bit A/D conversion
· Shutter speeds 1/8000-30 seconds
· 63-zone dual layer iFCL Metering
· Exposure compensation in +/- 5 stops in 1/3 or 1/2-stop increments
· 61-point high-density reticular AF with up to 41 cross-type points
· 3.2-inch LCD finder with 1.04 million dot resolution
· 1080p HD video capture in AVI, RAW, H.265, MOV and MPEG-4
· Manual exposure control and multiple frame rates in videos
· CF and SD card slots
· 6fps burst rate HDR mode Magnesium-alloy body,
· enhanced dust and weather resistance
· New customizable controls
· Electronic level
· Claimed shutter durability of 150,000 cycles
· Slilent & Low vibration modes

New sensor, focusing and metering systems
The Canon EOS 5D Mark III is built around a new 22.3 megapixel full-frame, self-cleaning CMOS sensor and promises high perforance and claims improved noise reduction at higher ISOs with its DIGIC 5+ sensor and up to 6 frames per second burst rate in RAW and JPEG. Additional technological advancements include an Intelligent Viewfinder, Canon's advanced iFCL metering system, High Dynamic Range (HDR), and Multiple Exposure mode.

A newly-designed 61-Point High-Density Reticular AF system is said to be Canon's most sophisticated AF to date, featuring multi-zonewide-area AF for better tracking. A new dedicated AF menu tab saves users from digging through menu functions. A new Multi-layer iFCL (intelligent Focus Color Luminance) metering system takes color and luminosity surrounding chosen AF points into account, whichCanon says will provide new levels of accuracy in fast-changing, tricky light.

Another new feature is High Dynamic Range (HDR); the Canon EOS 5D Mark III can merge 3 images at different exposures to create a final image with a broad range of shadow and highlight detail. In-camera HDR can cover a range up to +/- 3 stops in five different settings. The camera's control layout has been changed, with Canon adding more customizable controls and a new ergonomic design. A new "intelligent viewfinder" includes 100% coverage and a dual-axis electronic level indicator.

Improvements in video capture
The video and cinema industries have been eagerly anticipating the Canon EOS 5D Mark III for improvements over its groundbreaking predecessor. Canon claims the 5D Mark III can capture HD video with a level of sophistication on par with professional movie cameras offering phenomenal performance on a DSLR. It offers both All-I and IPB compression, supports H.264/MPEG-4 AVC High Profile, and automatically splits files greater than 4GB (FAT specifications) for extended recording without interruption.

The Canon 5D Mark III offers the option of timecoding during recording only (Rec Run) or at all times (Free Run), useful for multi-camera shoots. It also features improved sound recording adjustment capabilities, offering 64-step volume control accessible through the Quick Control screen during video shooting, plus a dedicated headphone jack for convenience in shooting. The CMOS sensor's new drive system is said to significantly increas image processor performance, reducing color artifacts and moiré (a commonproblem that occurs in scenes with horizontal lines), and ensures that the EOS 5D Mark III can record at a number of frame rates up to ISO 25600 in H mode.

Features
    Newly designed 22.3 Megapixel full-frame CMOS sensor, 14-bit A/D conversion, wide range ISO setting 100 25600 (L:50, H1: 51200, H2: 102400) for shooting frombright to dim light and next generation DIGIC 5+ Image Processor for enhanced noise reduction and exceptional processing speed.
    New 61-Point High Density Reticular AF including up to 41 cross-type AF points with f/4.0 lens support and 5 dual diagonal AF points (sensitive to f/2.8).
    iFCL Metering with 63 zone dual-layer metering sensor that utilizes AF and colorinformation for optimizing exposure and image quality.
    EOS HD Video with manual exposure control and multiple frame rates (1080: 30p (29.97) / 24p (23.976) / 25p, 720: 60p (59.94) / 50p, 480: 60p (59.94) / 50p) with 4 GB automatic file partitioning (continuous recording time 30 minutes), selectable "All i-frame" or IPB compressions, embedded timecode, manual audio level control while recording
    Outstanding shooting performance: up to 6.0 fps continuous shooting using a UDMACF card.
    Magnesium-alloy body with shutter durability tested up to 150,000 cycles, enhanced dust-and-weather resistance, and updated EOS Integrated Cleaning system for improved vibration-based dust removal.
    Intelligent Viewfinder with superimposed LCD display with approximately 100% field of view, wide viewing angle of 34.1°, and 0.71x magnification.
    3.2-inch Clear View II LCD monitor, 170° viewing angle, 1,040,000-dot VGA, reflection resistance with multi coating and high-transparency materials for bright and clear viewing.
    High Dynamic Range (HDR) and Multiple Exposure modes expand creative possibilities.
    Improved handling with the addition of new customizable controls, enhanced recording options with Dual Card Slots for CF and SD cards, Dual Axis Electronic Level, and compatibility with optional Canon Wireless File Transmitter and GPS Receiver.