Canon has announced four lenses for the EOS R system to date. These include the RF 50mm f/1.2 L USM (£2,349), RF 35mm f/1.8 Macro IS STM (£519), RF 24-105mm f/4L IS USM (£1,199) and the RF 28-70mm f/2L USM (£3,049). To ensure existing Canon EF and EF-S lens owners aren’t left out, Canon has created three EF- EOS R mount adapters. The most basic EF- EOS R mount adapter (£99) allows more than 70 EF and EF-S lenses to be used with the EOS R and is bundled as part of the body- only kit. There’s also the EF- EOS R control mount ring adapter (£199). This brings the functionality of the control ring found on new RF lenses to anyone wishing to attach an EF or EF lens to an EOS R body. What you’ll want to bear in mind is that this control ring is positioned considerably further back and as such isn’t as easy to control with large, heavy telephoto zooms as it is with smaller and lighter lenses.
The third mount adapter is aimed at those who’d like to use lenses that might be difficult to add filters to. The drop-in filter mount adapter EF- EF- EOS R with circular polarising filter will cost £299 and the drop-in filter mount adapter EF- EF- EOS R with variable ND Filter will cost £399. Each of the three adapters are fully compatible with the autofocus and optical stabilisation of the lens that’s attached, be it a Canon lens or third-party alternative.
The EOS R pictured alongside the new 50mm f/1.2 L USM lens and EF-EOS R mount adapter