Canon EOS 1D Mark III Firmware Update Version 1.3.1 Download

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Canon EOS-1D Mark III

Canon has released EOS 1D Mark III Firmware Update Version 1.3.1. It will enable the center AF point to autofocus when the camera is used with the EF 200-400mm F4L USM Extender 1.4X lens and an Extender, whose combined maximum aperture is f/8.

Download Canon EOS 1D Mark III Firmware Update Version 1.3.1 here