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EF 200-400mm lens firmware update

Firmware version 1.1.0 has been released for the EF 200mm-400mm f4L IS 1.4x lens. It corrects an error in which the subject may not be in focus on some occasions when using this lens with some camera models and performing AF shooting from approximately three metres.
The camera models affected are the EOS-1D X, Mark II,1D X, 1D C, 5DS, 5DS R, 5D Mark III and 5D Mark IV.

You can download the firmware by going to the Canon support site:
bit.ly/canon-ef-200-400-firmware

Details of how to install the lens firmware are included in the download.

Learn more about the Canon EF 200-400mm f4L IS USM Extemder 1.4x lens via EOS magazine

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