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Canon EF 200-400mm f/4L IS Extender 1.4x lens firmware update released (ver. 1.1.0)

Canon EF 200-400mm F/4L IS Extender 1.4x Lens Firmware Update Released (ver. 1.1.0)

Canon released firmware ver. 1.1.0 for the Canon EF 200-400mm f/4L IS 1.4x lens.

Firmware Version 1.1.0 is incorporated with the following correction.

Corrects a phenomenon 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 3m.

* Some camera models: EOS-1D X, Mark II, EOS-1D X, EOS-1D C, EOS 5Ds, EOS 5Ds R, EOS 5D Mark IV, EOS 5D Mark III

Download firmware 1.1.0 for the Canon EF 200-400mm f/4L IS Extender 1.4x.

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