Nikon AI to Sony NEX Adapter Ring for NEX-5 NEX-3 CNC Machined Black Metal Lens Mount Convert Nikon D Series Lenses to Sony NEX Cameras with Infinite Focus Support All Metal Construction
Nikon AI to Sony NEX Adapter Ring CNC Machined Metal Lens Mount for NEX-5 NEX-3

This adapter ring enables photographers to mount Nikon AI and D series lenses onto Sony NEX cameras, including the NEX-5 and NEX-3. It solves the fundamental problem of lens mount incompatibility between brands, allowing the use of classic Nikon glass on modern digital bodies. The ring supports infinite focus without any additional correction lens, preserving the original optical characteristics of the Nikon lens. Constructed from aluminium alloy with a fine copper bayonet, the ring avoids wearing the lens mount and includes an inner wall painting to reduce reflection on the camera's CMOS sensor. All-metal build ensures a tight, smooth fit.
Features and Construction

Every detail of this adapter ring is designed for reliable performance and image quality. The all-metal construction provides strength and longevity, while the inner wall treatment helps maintain clean images by reducing stray light reflection.
Material and Build
The ring body is made from aluminium alloy, offering a balance of strength and light weight. The bayonet uses fine copper, which is softer than typical lens mounts, reducing wear on the lens itself. The workmanship is described as very delicate, with a closely and smoothly combined bayonet that fits like an original lens mount.
Size and Practical Fit
Designed specifically for Sony NEX bodies (including NEX-5 and NEX-3), the ring provides a secure connection. No additional correction lens is needed for infinite focus, which simplifies the setup and avoids adding extra glass that could degrade image quality.
Uses and Placement

This adapter is ideal for photographers who want to use their existing Nikon AI or D series lenses on a Sony NEX camera system. It supports manual focus shooting and requires the camera menu setting 'shooting without lens' to be turned on.
Event or Professional Use
For professional photographers who own classic Nikon lenses with unique rendering, this adapter allows them to maintain familiar optics while taking advantage of the compact Sony NEX body. The infinite focus capability is essential for many professional scenarios such as portraiture or landscape work.
Everyday Home Use
Enthusiast photographers can reuse older Nikon glass for everyday photography, giving new life to lenses that might otherwise remain unused. The manual focus operation is straightforward and suits a range of home and hobby shooting situations.
Benefits and Buying Value

By using this adapter, photographers avoid needing to buy new NEX-native lenses for every focal length they already own. The all-metal construction ensures it will last through repeated use.
Reuse and Low Maintenance
The ring requires minimal maintenance—just keep the contact surfaces clean. Its robust metal build means it can be mounted and dismounted many times without loss of fit.
Why Choose This Product
This adapter offers infinite focus without extra glass, preserving the original lens character. The combination of aluminium alloy body, copper bayonet, and anti-reflection inner wall makes it a practical choice for those seeking a reliable, straightforward lens adapter for their Nikon to Sony NEX setup.