Nikon Nikkor 105mm f/2.5 Ai-S - Nikon F Mount

The Nikkor 105mm f/2.5 Ai-S is a legendary portrait lens known for its exceptional sharpness and pleasing bokeh. This manual focus lens features the classic Xenotar-type optical design, which provides high contrast even when shooting wide open. The Ai-S version features a built-in retractable lens hood and a robust metal construction typical of the era. It remains a popular choice for mirrorless users via adapters due to its compact size and mechanical precision. When sourcing a used 105mm f/2.5, the focus helicoid should be inspected for smooth, even resistance. SDS checks the aperture clicks to ensure they are crisp and that the blades are free from oil contamination. The built-in hood should slide easily but stay in place when extended. As these lenses are often decades old, we perform a thorough check for internal haze or fungal growth. The filter thread is a common point of impact damage, so ensure it is perfectly circular.