22.3 Megapixel full-frame CMOS sensor
The EOS 5D Mark III features a newly developed Canon full-frame 22.3 Megapixel CMOS sensor that's designed from the ground up to create high resolution, perfectly detailed images with unprecedented speed and clarity. A full 24 x 36mm, the sensor captures 5784 x 3861 large individual 6.25 μm pixels and has a much-improved S/N ratio. A new photodiode structure with an increased photoelectric conversion rate increases the sensor's sensitivity by approximately 2 stops over previous models, meaning higher ISOs with the lowest noise of any EOS digital camera. And a 2-line 8-channel simultaneous signal readout means speeds of up to 6.0 fps (RAW + JPEG) are possible!
14-bit A/D conversion, wide range ISO setting 100-25600 (L: 50, H1: 51200, H2: 102400)
The EOS 5D Mark III not only offers 14-bit signal processing for excellent image gradation, it delivers higher standard and expanded ISOs, and a score of new options to enhance shooting in varied and fast-changing lighting situations. With a standard range of ISO 100-25600, the EOS 5D Mark III represents a 2-stop increase in sensitivity over previous cameras. Thanks to the improved signal-to-noise ratio of the new sensor and powerful noise reduction, the EOS 5D Mark III can shoot at expanded sensitivities down to ISO 50 (L) and up to 51200 (H1), and even 102400 (H2)!
DIGIC 5+ Image Processor for enhanced noise reduction and blazing processing speed
The EOS 5D Mark III uses a DIGIC 5+ Image Processor. Working with two 4-channel A/D converter front-end processing circuits, and delivering speeds of up to 6.0 fps (RAW + JPEG), and the DIGIC 5+ Image Processor improves data processing performance and features new algorithms that promote greater noise reduction at higher ISOs. In addition to conventional image processing functions the DIGIC 5+ Image Processor offers real-time compensation for chromatic aberration in both still and motion images.
All new 61-Point High Density Reticular AF
The newly designed 61-Point High Density Reticular AF features an Offset Array Sensor (with staggering AF point arrangement) to deliver greater accuracy, no matter the situation. It offers multi-zone wide-area AF for better tracking, has 5 central dual cross-type points (f/2.8 diagonal), 21 central cross-type points (f/5.6 horizontal & vertical) and 20 outer cross-type points (f/4.0 horizontal), and is sensitive in extremely low-light situations (EV-2 for a central point with a f/2.8 lens).
iFCL Metering with 63-zone dual-layering metering sensor
The EOS 5D Mark III features Canon's multi-layer 63-zone iFCL (intelligent Focus Color Luminance) Metering System that integrates the cameras AF system into its readings. By taking into account the color and luminosity surrounding the chosen AF point(s), this new system delivers an entirely new level of accuracy, especially in situations where the light changes quickly. The metering sensor enables evaluative, center weighted, partial and spot metering, plus offers 5-step exposure compensation for perfectly exposed images, every time.
EOS HD Video with manual exposure control, multiple frame rates and selectable All i-frame or IPB compression.
The EOS 5D Mark III 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. It 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.