Overview

The Nikon Nikkor 50-135mm f/3.5 Ai-S is a well-built, heavy brass-and-steel push-pull zoom with a constant f/3.5 aperture and a complex 16-element design. Optically, it is sharp when stopped down to f/4 but exhibits vignetting and color fringing. Its handling is convenient for quick shooting, though zoom creep is a problem. It suits users who value solid construction and a unique focal range, but its weight and bulk may deter walk-around use.