【Mint】Nikon Micro-NIKKOR 55mm f/2.8 Ai-s Macro Lens *Aperture Stuck* #E0599

• Focus ring works smoothly
• Aperture ring turns, but the aperture blades stay fully open (do not stop down)

• No fungus
• No haze or fog
• No scratches
• No balsam separation

• Brand: Nikon
• Model: Micro-NIKKOR 55mm f/2.8 Ai-s
• Lens Type: Manual-Focus Macro Prime Lens
• Lens Mount: Nikon F (Ai-s)
• Compatible Cameras: Nikon F-mount film SLRs (FM, FE, FM2, FE2, FA, F3, F4, etc.); metering on many Nikon digital SLRs; mirrorless cameras via adapter
• Focal Length: 55mm
• Maximum Aperture: f/2.8
• Minimum Aperture: f/32
• Lens Construction: 6 Elements in 5 Groups
• Close-Range Correction: CRC (Close-Range Correction) system
• Angle of View: 43° (on 35mm full frame)
• Minimum Focusing Distance: 0.25m
• Maximum Magnification: 1:2 (0.5×)
• Focus Type: Manual Focus
• Aperture Blades: 7
• Filter Size: 52mm
• Weight (Approx.): 290g
• Release Year: 1981
• Made in: Japan

The Nikon Micro-NIKKOR 55mm f/2.8 Ai-s is a highly regarded manual-focus macro lens from Nikon's Ai-s era. Known for its exceptional sharpness and flat-field performance, it has long been a favorite among photographers who need precise, detailed close-up images. It also doubles as an excellent standard lens for everyday photography.

The lens uses a 6-element, 5-group design with Nikon's CRC (Close-Range Correction) system, which maintains excellent image quality from close-up distances all the way to infinity. Its images are noted for being very sharp across the frame with low distortion, making it ideal for copying documents, artwork and flat subjects. Contrast and color rendering are clean and natural.

Like other Ai-s Nikkors, it features a solid metal barrel, a long and smooth focusing throw and a precise aperture ring. The deeply recessed front element acts as a built-in hood, reducing flare. The long focusing travel allows extremely precise focus adjustments, which is essential for macro photography.

The lens focuses down to 0.25m, providing 1:2 (half life-size) magnification on its own. With Nikon's matching PK-13 extension ring, it can reach 1:1 life-size magnification. Its compact size and 52mm filter thread make it convenient to carry and use.

This lens is perfect for macro photography of flowers, insects and textures, as well as product photography, document copying and scientific work. It also serves well as a sharp standard lens for street, travel and landscape photography. Video shooters appreciate its smooth focus and natural perspective.

As an Ai-s lens, it mounts on virtually all Nikon F-mount film SLRs and provides full metering on Ai-compatible bodies. Many higher-end Nikon digital SLRs support metering with Ai-s lenses once lens data is entered. With a Nikon F adapter, it can also be used on Nikon Z, Sony E, Fujifilm X, Canon RF, Micro Four Thirds and L-mount mirrorless cameras.

The Micro-NIKKOR 55mm f/2.8 Ai-s is still valued today because its optical precision and versatility rival those of many modern lenses. It is a dependable tool for detailed work and a pleasure to use for general photography. Its reputation among macro enthusiasts and collectors remains strong.

For photographers seeking a classic Nikon macro lens with outstanding sharpness and build quality, the Micro-NIKKOR 55mm f/2.8 Ai-s is a superb choice. It offers precise close-up capability, flat-field accuracy and genuine Nikon craftsmanship. It is a lens that can serve both technical and creative needs.