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The layout of the storage case for the EF400mm f/2.8L IS II USM

Using drop-in filters with the EF 400mm f/2.8L IS II USM lens.

Specifications for the EF 400mm f/2.8L IS II USM lens

Using Focus Preset on the EF 400mm f/2.8L IS II USM lens

Using the tripod mount on the EF 400mm f/2.8L IS II USM lens

Using Extenders (Sold Separately) with the EF 400mm f/2.8L IS II USM lens

Extenders Attach the extender to the lens, and then attach the camera. To remove it, reverse the order. Errors may occur if you attach the extender to the camera first.