Yongnuo YN-2.0X III 2X teleconvertitore extender obiettivo messa a fuoco automatica per Canon EOS EF
EF 135MM F/2L USM. EF 200MM F/2.8 L II USM. EF 200MM F/2 L IS USM. EF 200MM F/1.8 L USM. EF 300MM F/2.8L IS USM. EF 300MM F/2.8L USM. EF 300MM F/4 L IS USM. EF 400MM F/2.8 L IS II USM.