Fotga Macro Auto Focus Extension Tube 10mm 16mm Set DG for Samsung NX Mount NX1 NX30 NX300 NX500 NX Mini NX1100 NX2000 NX3000 NX3300 Dslr Cameras This high quality automatic macro Extension Tube Set is designed to enable a lens to focus closer than its normal set minimum focusing distance It contains 2pcs tubes in different length 10mm/16mm, which can be used in any combination or individually to obtain the different magnification Designed with electronic contacts,which make it support automatic focusing,automatic exposure,etc. It enables you to use all shooting modes of the camera,exposure compensation is required Suitable for: All Samsung NX Mount Camera,such as Samsung NX1 NX30 NX300 NX500 NX Mini NX1100 NX2000 NX3000 NX3300 etc.