Product Notice

Year :
Mar - 2019
To Users of the EF400mm f/2.8L IS III USM and EF600mm f/4L IS III USM Interchangeable Lenses for Digital SLR
2019-MAR-18
Please be informed of the information outlined below regarding an upcoming firmware release for the EF400mm f/2.8L IS III USM and EF600mm f/4L IS III USM interchangeable lenses for digital SLR cameras.
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