EF 400mm f/2.8L IS III USM Support

Side view of Canon EF-M 55-200mm f/4.5-6.3 IS STM lens

Drivers & downloads
Product manuals

Drivers & downloads
Product manuals

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OS Version:

EF400mm f/2.8L IS III USM Firmware Version 1.1.2 [Mac OS X]

For macOS 10.15, 15th November 2019
EF400mm f/2.8L IS III USM Firmware Version 1.1.2 [Windows]

For Windows 10, 15th November 2019

EF400mm f/2.8L IS III USM Instructions

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