Pre-Owned - Quantaray 28-85mm F3.5-4.5 (Nikon) AI-S
The Quantaray 28-85mm f/3.5-4.5 AI-S is a vintage, third-party manual focus zoom lens built for the Nikon F-mount system. "Quantaray" was a house brand for Ritz Camera, meaning the lens itself was not manufactured by Nikon or Quantaray; instead, it was a rebranded lens typically manufactured by Sigma to serve as a budget-friendly alternative to native Nikon glass.
Because it features the AI-S mount modification (indicated by the AI ridge and indexing indent), it supports manual focus and aperture control on a wide variety of vintage Nikon film bodies and can be easily adapted to modern mirrorless digital cameras.
Key Details & Specifications
• Rebranded Origin: Built by Sigma and sold under the Quantaray name as an affordable consumer zoom.
• Optical Range: Covers a highly versatile wide-angle (28mm) to short telephoto (85mm) range, making it a flexible walk-around lens.
• Variable Aperture: The maximum aperture shifts from f/3.5 at the wide end to f/4.5 at the telephoto end.
• Nikon Compatibility: Features native mechanical coupling for aperture metadata ("bunny ears" prongs and AI-S ridge), allowing it to meter correctly with vintage Nikon SLRs like the FM2, FE2, or F3.
