Overview

The Nikon Nikkor 35-70 mm f/3.5 Ai is a professional manual focus zoom with constant f/3.5 aperture, praised for sharpness across the range and low distortion, outperforming many f/2.8 zooms. Weaknesses include susceptibility to flare, requiring a hood, and a rotating front element that complicates filter use. Build quality is outstanding, but the AI-s version has stiff focus. It suits users who value optical quality over convenience, especially on tripods, and works well on professional cameras.