Kenko Digital Ring Set for Canon RF Mount with Electronic Made in 515495 Close-Up (10mm/16mm, 2-Piece Set) Contacts, Japan,

An extension tube that allows you to shoot closer than the minimum focusing distance of the original lens. Equipped with electronic contacts, it is possible to record shooting data Set of two, 10mm and 16mm lengths Although AF works, the depth of field is extremely shallow and it is difficult to focus, so we recommend using MF. It cannot be used with non-genuine lenses as they do not support electrical signals. It also cannot be used in conjunction with a mount adapter.