Canon EF/EF-S Series lens, 3 tubes 12mm/20mm/36mm
We don't recommended to combine 2 or 3 rings at same time if the focal length is less than 70mm.the auto focus is easy when mount ONE ring , but difficult for 2 or 3 . we suggest to set your camera in MF .
Please see 5th image , that's my testing data , hope that's helpful for your photograph , if you still have any problems for using it , please feel free to contact me , i will support technocial support , thanks
Can be used alone or combined,which can achieve 7 different kind of magnification and work
perfectly with camera’s auto focus.
Pure cupper pin,perfect match.Metal interface,AF,better transmission
Can be used alone or combined,perfectly with camera’s auto focus.