Nikon Nikkor 200mm f/4 Ai - Nikon F Mount

The Nikkor 200mm f/4 Ai is a compact manual-focus telephoto prime for the Nikon F-mount. Despite its focal length, it is notably portable and features a built-in retractable lens hood. Its optical design provides excellent contrast and colour rendition, making it a favoured choice for handheld nature and street photography where a longer reach is required without the bulk of faster f/2.8 alternatives. Look for a smooth, damped focus rotation, as the focus helicoids on these older units can sometimes become dry or gritty. The built-in hood should slide smoothly and stay in place when extended. SDS checks for internal fungus, which can occasionally develop in these deeper telephoto designs, and verifies that the Ai indexing tab is straight and functional for accurate metering.