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 clockwise until it click-locks into place.
2.Mounting the adapter with the 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 the lens clockwise 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 referring to the following steps: Menu-->Set Up-->Release w/o Lens-->Enable-->OK
* Taking Photos
  Switch camera to manual focus (MF)mode. Take photos of objects, then evaluate results on the monitor screen.

NEX adapter ring usage:
1, first in the camera menu to enter the setting option "no lens shooting" open, the general default open peak assist focus, that is when the red focus peak concentration, the best use of the adapter ring settings
2, the use of LCD focus, composition metering are simple controls, is a manual focus, convenient and quick!
3, can use the MF zoom focus function (usually soft key B, the bottom right corner of the button), 7 times or 14 times zoom focus, to achieve focus function
4, can use the M file or A file (support for automatic metering) mode to shoot, enjoy the fun of manual!

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 to assist function to focus accurately (7x or 14x zoom focus). 
The adapter is designed with a 360-degree focusing ring on 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 a big protruding rear element, preventing the lens to be mount on the 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 Silver Plated Mount Ring

Package Contents:
1x Contax G to NEX Lens Adapter

Camera Lens Adapter Ring for Exakta EXA to for Sony NEX E Mount NEX7 NEX-5N NEX5 NEX3 Convert Lens Adapter

Attach your Exakta mount lens to your S0ny NEX cameras.
Focus to infinity
Support manual mode or aperture priority mode
Autofocus (AF) is not available
Material: Aluminum & Brass
Turn on 'shoot without lens' to use MF lenses with adapters
Use MF assist function fo focus accurately (7x or 14x zoom focus)

Compatible: 
Lens: Exakta Mount Lenses
Camera: Support S0ny E Mount Camera, NEX-F3, NEX-3, NEX-C3, NEX-5, NEX-5C, NEX-5N, NEX-5A, NEX-5K, NEX-5R, NEX-5T, NEX- 5D, NEX6, NEX-7, NEX-7K, A7, A72, A7R, A6000, A6100, A6300, A5000, A5100.
HD Video Camera: S0ny E Mount NEX-VG10, VG20, VG30, VG900E, EA50

Package:
1x Exakta Lens to Sony E Mount Adapter 
 

Camera Lens Adapter Ring for Contax Yashica C/Y CY Lens to for Sony Alpha NEX E-Mount NEX-3N NEX-6 NEX-5R C Y to E Mount

Although the lens will fit physically, automatic diaphragm (AE metering), or other auto functions are not retained using this adapter.
Both camera-side and lens-side of the adapter are made of brass, precision-machined, and plated with chromium
Precise fit and solid connection - lens has no play, gap, or wiggling when mounted on adapter and no adjustments are required to fit your lens.
Designed to reach infinity focus while maintaining the correct registration distance required to support CRC lenses or lenses with floating elements.
Satin surface finish
 
Note:
Turn on 'shoot without lens' to use MF lenses with adapters.
 
Suit For 
Contax CY Lens
For Sony NEX E Mount Camera
A5100 A6000 A5000 A3000 NEX-5T NEX-3N NEX-6 NEX-5R NEX-F3 NEX-7 NEX-5N NEX-5C NEX-C3 NEX-3 NEX-5
A7 A7s A7R A7II A7RII A7SII
 
Package Include:
1x Lens Adapter Suit for Contax CY Lens to Sony E Mount NEX Camera

Camera Lens Adapter Ring with Aperture for Canon EOS EF Mount Lens to FX for Fujifilm Fuji X-PRO1 X-E1 X-T1 DSLR EF-FX
Note that this adapter is not suitable for use with the EF-S half-lens, and some wide-angle and macro lenses may bring dark corners to the spot!
 

Camera Lens Adapter Ring for Rollei QBM Mount Lens To FX for Fujifilm FUJI X-Pro1 X-E2 X-T1 Lens Adapter QBM-FX

Attach Rollei QBM Mount Lens to your Fujifilm X-Pro1, X-E1 camera with this adapter.
There is no electronic element in the adapter, aperture, and focusing must be manually controlled.

Specifications: 
Lens compatibility: Rollei QBM mount
Camera: Fujifilm X mount
Function: full manual operation, manual focus, manual dimming ring, can achieve manual exposure with the body, aperture priority exposure, infinity coke.
Focus: support infinity
Material: aluminum and brass

Camera Lens Adapter Ring with Aperture for Canon EOS EF Lens to Micro 4/3 M4/3 Mount Adapter for Olympus

Specification:
This adapter has Build-in Aperture, adjustable aperture value from F2.8 to F22.
This adapter makes for Canon EF EF-S mount lenses can be used on Micro 4/3 mount SYSTEM cameras.
Only fits Canon EF Mount lenses or other manufacturers' EF-mount lens, do not compatible with CANON EF-S lens.
It is possible to use Macro rings and other accessories

Suitable For
(1) LENS: Canon EF mount lens,
(2) CAMERA: Olympus E-P1, E-P2, E-P3, E-PL1, E-PL2, E-PL3, E-PM1,
(3) DMC-G1, DMC-G2, DMC-G3, DMC-GH1, DMC-GH2, DMC-GF1, DMC-GF2, DMC-GF3, DMC-GF7, DMC-G10.
No electrical connection
Focus on Infinity.
It is possible to use Macro rings and other accessories.
Material: Brass Chromed and Anodized Aluminum, color: black.
 
NOTE:
This adapter is only compatible with EF lens, it is not suitable for CANON EF-S lens
such as:
EF S 10-22mm; EF S 15-85mm; EF S 17-55mm; EF S 17-85mm;
EF S 18-55mm; EF S 18-135mm; EF S 18-200mm; EF S 55-250mm; EF S 60mm

For some lenses, the vignetting will grow if you narrow the aperture, It will results in more obvious in smaller aperture lens or longer lens.
The aperture value (F2.8~F22) on the ring is just for reference. it can not represent the actual data 

Camera Lens Adapter Ring for Nik0n AI G D S Lens to Micro 4/3 M4/3 Mount for Panasonic GH2/GH3/GH4 for Olympus M4/3 OM-D

This lens mount adapter allows you for connection from Nik0n Lens(Including most  NIKON lens type as G,AI,S,D mount) to Olympus M4/3 camera. It utilizes high-precision Aluminum alloy material, and be able to reach infinity focus while maintaining the correct registration distance required to support CRC lenses or lenses with floating elements.
The G LENS simply means that there is no aperture adjustment device on the lens. This ring adds a linkage device to activate the dilemma that the G LENS cannot adjust the aperture, revives the lens group of many  NIKON users, and the G LENS adjusts the aperture on the adapter ring. OFF-ON from the smallest to the largest aperture, AI (D), AIS, etc. A lens with an aperture ring adjusts the aperture directly on the lens
 
Features:
1. Widely used for NIKON lens of G/AI/S/D type;
2. Manual focus can reach infinity focus;
3. Full manual operation, manual focusing, manual adjustment of the light ring, manual exposure can be achieved with the body, aperture priority exposure, infinity focus.
4. This ring is the perfect adapter for Nikon full series of AI/G/D/S lenses to the M4/3 mount camera.
5. High-precision metal material made;    
 
Specification: 
Compatibility:
Camera: M4/3-Mount Camera (for Panasonic G1,GF1, GH1,GH2, GH3,G1,GF2,G2,GF3,GF5,GF6,GF7,GX1,G5X,GX10,for Olympus OM-D,E-P1,E-P2,E-PL3,E-P3,E-PL5 ,E-PM2 Camera)  
Lens: G-Mount Lens (for NIKON lens in G, AI,S,D type)   

Package:
1* AI(G)-M4/3 Lens Adapter

Camera Lens Adapter Ring OM-N1 for Olympus OM Lens for Nikon Nikon1 J5 J1 V1 J2 V2 J4 V3 S1 S2 Camera Mount Adapter

This adapter ring allows you to use the Olympus OM lens on the Nikon 1 camera body, it's saving you the expense of a costly and irreversible conversion.
This adapter has no lens element so it does not affect optical performance.
Made of Metal
Color: Black
focusing or any other functions will not operate correctly while using this adapter.
Feature: Full manual operation, manual focus, manual dimming ring, manual exposure can be achieved with the body, aperture priority exposure, infinity focus
"Stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body.

Compatible For
OM Mount Lens
Nikon Camera (N1 J5 J1 V1 J2 V2 J4 V3 S1 S2)

Package contains:
1 x OM Lens to Nikon 1 Camera Adapter

Notice:
Although the lens will fit physically, automatic diaphragm,auto-focusing, or any other function will not operate correctly while using this adapter.

In this case "stop-down mode" will need to be used when metering since the lens does not have the ability to have its aperture controlled by the camera body. You can shoot with manual mode or aperture priority mode.

Camera Lens Adapter Ring AI(G)-EF.M for Nikon AI D S G Lens to for Canon EF-M EOS-M EFM EOSM M2 M3 EOSM5 EOSM6 M10 Camera

All-metal structure
Focus infinity
Meter Exposure Function
No electronic connection
Supports manual control, manual focus, manual exposure
Avoid reflecting of light
Super smooth surface finishing
Install, remove and operate lens smoothly
Set your camera to "shooting without lens" mode
Allows manual adjustment of the lens aperture.
The all-metal adapter is designed to fit the lens securely, yet can still be removed easily when not needed.

Suit For:
Nik0n AI/D/S and G type lens
Canon EF-m EOS-m EFM EOSM/M2/M3/EOSM5/EOSM6/M10
 
Package List:
1 x Lens mount adapter AI(G)-EF.M
 
Note:
there is no electronic integration, no autofocusing, no auto aperture

Camera Lens Adapter Ring for Nikon AI D G AID Lens to for Pentax Q PQ P/Q Q10 Q7 Camera Mount Adapter

Features:
Allows Nik0n AI/G/AID mount lens to fit onto the PENTAX Q PQ P/Q Q10 Q7 mirror-less interchangeable lens camera. 
This unique adapter is equipped with an "ON/OFF" aperture control ring for the user to set the designed aperture. 
The lens fits physically, auto-focusing control, and camera modes which control exposure by automatically adjusting aperture are not retained, however. 
Preserve all focusing range up to the infinity point. 

Compatibility:
NIKON G AI AID LENS
PENTAX Q PQ Mirrorless Interchangeable-lens camera
PENTAX Q10 Q7 Mirrorless Interchangeable-lens camera

Material: Black Anodized Metal Body with Brass Silver Plated Mount Ring

Package Contents:
1x Lens Adapter AI(G)-PQ