Do Canon's old EF lenses limit new EOS R mirrorless cameras?

There’s no restrictions with autofocus, which makes the Canon EF 100-400mm lens a great partner for sports and action with mirrorless cameras (Image credit: Brian Worley)

It is clear that no more DSLR models are coming from Canon, and the EOS R series mirrorless cameras are now the mainstay of the Canon’s line-up. One of the commonly-asked questions is about Canon lenses… Specifically, is it necessary to swap out older lenses for new RF versions? The short answer is no, you can use DSLR lenses on the Canon EF-EOS R mount adapter as EOS R cameras are fully able to communicate with EF and RF lenses natively. 

There are some additional benefits of RF lenses. They are often smaller and lighter than the direct equivalents from the EF range. But the advantage is not always clear cut… The EF version of the 70-200mm f/2.8L IS USM is a case in point; the RF 70-200mm f/2.8 version is much shorter and lighter, but it can’t be used with an extender while the older EF lens can. 

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Brian Worley

Brian is a freelance photographer and photo tutor, based in Oxfordshire. He has unrivaled EOS DSLR knowledge, after working for Canon for over 15 years, and is on hand to answer all the EOS and photographic queries in Canon-centric magazine PhotoPlus.