This adapter allows to use Mamiya 645 lenses on any EF mount camera.
It has "positive lock" mechanism so there isn't any play between the adapter and lens mount.
Andrew Reid's review of our positive locking style mechanism on eoshd.com :
http://www.eoshd.com/2015/03/locking-canon-and-nikon-adapters-for-e-mount-sony-a7s/
-- INFINITY FOCUSING --
-- STAINLESS STEEL LOCKING RING --
-- SUPPORT FOOT WITH 1/4" AND 3/8" MOUNTING POINTS --
-- CROP FACTOR OF X2.2 (FOR SUPER 35MM FRAME) --
-- 0.002mm ACCURACY --
-- MADE OF AIRCRAFT GRADE ALLOY AND STAINLESS STEEL --
-- BLACK ANODIZED --
-- MADE IN UE ( POLAND ) --
-- DIRECT FROM THE MANUFACTURER --
Visit: c7adapters.com
-- TERMS AND CONDITIONS --
1) THE ITEM WILL BE SHIPPED WITHIN 2 BUSINESS DAYS AFTER PURCHASE
2) ALL SHIPPING ARE INSURANCE AGAINST LOST AND DAMAGED
3) WE DO NOT ACCEPT RETURNS
4) ECONOMY SHIPPING METHOD IS TRACKABLE IN MOST COUNTRY ( EXCEPT AUSTRALIA )