It's a locking version
adapter. which will make the connect of lens / adapter very firmly. there is no
loose between lens and adapter. it will it very stable.With this adapter, the
lens will fit physically, but automatic diaphragm, auto-focusing, and
other auto functions will not work, only manual model will be
available.
Features
1.
After the lens is installed on the locking adapter ring, it is more compact and
stable
2.
Made of Alum or Steel, with perfect surface finishing and super precise design
3.
Focus infinity feature is available for use with our camera adapter
4.
Internal light suppression treatment of the adapter ring