. Features: This is Newest adapter for Leica M39 mount lens to NEX mount camera. This adapter have lock pin, can for focus for infinity. It allow for focus to infinity It must turn on 'shoot without lens' setting of your NEX camera in order to use the adapter You can use MF assist function to for focus accurately. (7x or 14x zoom for focus) Lens mount adapter only, other accessories demo in the picture is not included SUITABLE FOR: NEX- F3,NEX-N3,NEX-3,NEX-C3,NEX-5,NEX-5D,NEX-5C,NEX-5R,NEX-5N,NEX-5A,NEX- 5K,NEX-5T,NEX6,NEX-7,A5000,A5100,A6000,A7,A7R,A7S Specification: Item Name: Lens mount adapter Material: Aluminium alloy Shape: Round Type: Extension Tubes Camera/Camcorder Fitting: for NEX Lens Fitting: for Leica L39 Mount lens Outer Diameter: 5.5cm/2.17'' Inner Diameter: 4cm/1.57'' Color: Black+Silver Quantity: 1 Pc Note: 1.Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 x Lens mount adapter (without retail package)