1、Rings with different lengths of 10mm and 16mm can used alone or in combination to get the desired magnification. 2、With electronic contact, support automatic focusing, automatic exposure, etc. 3、Metal mount, fine workmanship, high precision, wear-resistant and durable, and will not damage the lens and camera. 4、It can match the TTL metering and AE mode of the camera body. 5、The close-up ring is only suitable for macro shooting, so it can only be focused in close-up, and it is normal that the distance can not be focused when it is installed. Features: 1. Rings with different lengths of 10mm and 16mm can used alone or in combination to get the desired magnification. 2. With electronic contact, support automatic focusing, automatic exposure, etc. 3. Metal mount, fine workmanship, high precision, wear-resistant and durable, and will not damage the lens and camera. 4. It can match the TTL metering and AE mode of the camera body. 5. The close-up ring is only suitable for macro shooting, so it can only be focused in close-up, and it is normal that the distance can not be focused when it is installed. 6. Suitable for Samsung NX mount camera. Specification: Condition: 100% Brand New Item Type: Macro Lens Adapter Material: Aluminium Alloy + ABS Color: As Pictures Shown Automatic Focusing: Yes Fitness: for Samsung NX Mount Camera Tube Length: 10mm+16mm Weight: Approx. 74g Size: Approx. 7.2x7.2x5.2cm/2.8x2.8x2.0inch(Package) Package List: 1 x Lens Adapter