EOS-1D Mark IV & EOS-1Ds Mark III Firmware Update

For the EF 200-400 f/4L IS 1.4x
Canon has updated both the discontinued EOS-1D Mark IV and the EOS-1Ds Mark III to work correctly with the new EF 200-400 f/4L IS 1.4x lens that is about to hit stores.

Canon EOS 1D Mark IV

• Version 1.1.3
• Enables 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.
• Fixes a phenomenon in which abnormal images may result when continuous shooting mode is enabled and the image size is set to “RAW” or “RAW+JPEG.
• Download Here

Canon EOS 1Ds Mark III

• Version 1.2.2
• Enables 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 Here

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