EOS S.O.S

Use the EF-EOS R Mount Adapter and your EF lenses can be used perfectlyhas a limited range of usable EF lenses, mostly macro lenses. EF 70-200mm lenses can be used with extenders, which is not possible with the RF versions. For general photography, EF lenses are more than adequate; the camera’s advanced subject tracking AF works very well with EF lenses. Additional manual focus aids such as focus peaking and the focus guide help to ensure accurate manual focus with any lens.