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Digital Camera World
Digital Camera World
Niall Hampton

Canon RF 600mm f/4L IS USM review: Pricey yet indispensable optic for professional sports and wildlife photographers

Canon Digital Camera World Sigma
Photo of the Canon RF 600mm F4L IS USM super-telephoto prime lens in use at the RSPB Bempton Cliffs nature reserve in Yorkshire, England, UK.

The Canon RF 600mm f/4L IS USM super-telephoto prime announced in April 2021, at a time when Canon rolled out its EOS R3 pro mirrorless plus a brace of new glass for its RF mount.

The RF 600mm was unveiled at the same time as the RF 400mm f/2.8L IS USM. Both lenses are based on their EF counterparts, the EF 400mm f/2.8L IS III USM and the EF 600mm f/4L IS III USM, which were announced at the same time as Canon jumped into full-frame mirrorless with the EOS R in fall 2018.

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