Aluminum alloy ring, fine copper bayonet (will not wear the lens), the inner wall of the paint matting treatment so as not to affect the reflection of CMOS imaging, for Nikon AI and D-type lens, the perfect co-infinity! . NEX machine can use A shooting, manual focus, NEX camera menu "no camera shooting" Please set to open! At present, SONY NEX system can take almost all shots, NEX loop has arrived, reaching more than 20 kinds, still continue to launch, making the old lens in the digital re-glow. NEX ring without any additional corrective lenses, you can infinity focus, so you can retain the original lens original taste of the imaging effect of this ring to the NIKON lens over to the SONY NEX bayonet body used to connect Ring material: all metal, durable workmanship: workmanship is very delicate, with the bayonet combined with smooth, as the original lens Note: Nikon only G series lenses can not manually adjust the aperture. Note: This section of the loop, can not be applied to the E port of the camera, only for a single micro-E port, such as the mandatory use of the camera E port