The YN-2.0X II is the updated version of YN2.0X.
Suit for Below EF EOS Camera Lens:
EF 24-70MM F/2.8L II USM
EF 24-70MM F/4L IS USM
EF 24-105MM F/4L IS USM
EF 28-135MM F/3.5-5.6 IS USM
EF 28-300MM F/3.5-5.6L IS USM
EF 70-200MM F/2.8L IS II USM
EF 70-200MM F/2.8L USM
EF 70-200MM F/4L IS USM
EF 70-200MM F/4L USM
EF 70-300MM F/4-5.6L IS USM
EF 70-300MM F/4.5-5.6 DO IS USM
EF 70-300MM F/4-5.6IS USM
EF 75-300MM F/4-5.6IIIUSM
EF 75-300MM F/4-5.6III
EF 100-400MM F/4.5-5.6L IS USM
EF 24MM F/2.8 IS USM
EF 24MM F/2.8
EF 28MM F/1.8 USM
EF 28MM F/2.8 IS USM
EF 28MM F/2.8
EF 35MM F/1.4 L USM
EF 35MM F/2 IS USM
EF 40MM F/2.8 STM
EF 50MM F/1.2 L USM
EF 50MM F/1.4 USM
EF 85MM F/1.2 L II USM
EF 85MM F/1.8 USM
EF 100MM F/2 USM
EF 135MM F/2L USM
EF 200MM F/2 L IS USM
EF 200MM F/2.8 L II USM
EF 300MM F/2.8L IS II USM
EF 300MM F/4 L IS USM
EF 400MM F/2.8 L IS II USM
EF 400MM F/4 DO IS USM
EF 400MM F/5.6 L USM
EF 500MM F/4 L IS II USM
And you can use it with below cameras in Automatic Focus function:
Canon 5D, 5DII, 5DIII, 6D, 7D, 10D, 20D, 30D, 50D, 350D, 400D, 450D, 500D, 550D, 600D, 600Da, 650D, 1000D, 1100D.
NOTE:
Precautions:
It cannot to use the YN-2.0X II teleconverter below 70mm zoom range.
Reviews YongNuo YN-2.0X II Teleconverter Auto Focus Mount Lens for Canon EOS EF Lens