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 resulting in better images from the start. 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)! Beyond the obvious advantages of its wide ISO range, the EOS 5D Mark III has automatic ISO settings, found on the dedicated ISO menu. Minimum and maximum ISO settings can be specified, as can a user-defined range, plus full auto and manual.DIGIC 5+ Image Processor for enhanced noise reduction and blazing processing speed
For a whole new level of performance, 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. With the power of this processor, speed improvements are noticeable from the instant the camera is turned on and the stunning results speak for themselves.