BGNING Camera Lens Adapter Ring for Contax CY G to for Sony NEX NEX3 NEX5 NEX 5N C3 E Mount Lens Adapter

Features:
The lens fits physically but automatic diaphragm, auto focusing, or any other functions can only operate manually.
Use the lens in the fully manual exposure mode (M), or in the aperture priority (A) mode and select MF assist function to focus accurately (7x or 14x zoom focus). 
The adapter is designed with a 360 degree focusing ring in the round side allows the lens to focus precisely.
Note: Some of the Contax G lenses, i.e., 16mm, 21mm, 28mm,35mm, 45mm and 35-70mm zoom, have big protruding rear element, preventing the lens to be mount on NEX body.
 
Compatibility:
* For CONTAX G C/G lens
* For Sony NEX-3, NEX-5, NEX-C3, NEX-5N NEX-5R, NEX-6, NEX-7,NEX 3N 

Material: Black Anodized Aluminum Body with Brass Sliver Plated Mount Ring

Installation Guide:
1.Attaching the adapter to the lens.
  First,position the corresponding model lens in the adapter ring's bayonet mount/screw mount,with the lens's white dot aligned with the red dot on the adapter's front side.Then,twist the lens clock-wise until it click-locks into place.
2.Mounting the adapter with lens on the camera
  When the camera is powered off,position the adapter ring of the assembly in the camera's mount,with the red dot on the adapter's rear end against the red dot on the camera's lens mount.Then,twist the adapter with lens clock-wise until it click-locks into place.
3.To remove the adapter ring with lens from the camera,press the lens release button on the camera and twist the adapter counter-clockwise.

User Guide:
* Shoot without lens function must be turned on refer to the following steps: Menu-->Set Up-->Release w/o Lens-->Enable-->OK
* Taking Photos
  Switch camera to manual focus (MF)mode.Take photo of object,then evaluate result on monitor screen.
 
Package Contents:
1x Contax G to NEX Lens Adapter