105mm · f/1.8
The Nikon Nikkor 105mm f/1.8 Ai-S is a manual-focus lens known for its fast aperture and compact 5-element design. Optically, it offers low vignetting and good sharpness, though wide-open performance demands precise focusing. Build quality is typical of Nikon Ai-S lenses: all-metal with a smooth focus ring and built-in hood. Its main weakness is size and weight compared to the 105mm f/2.5. It suits photographers who value speed and manual control, especially on larger bodies like the Nikon F4.