Nikon AF Nikkor 70-210mm f/4 - Nikon F Mount

The Nikon AF Nikkor 70-210mm f/4 was Nikon's first autofocus telephoto zoom, featuring a constant f/4 aperture throughout the range. Unlike the later f/4-5.6 version, this model uses a traditional rotating zoom ring rather than a push-pull mechanism. It is prized for its excellent optical quality and robust, all-metal barrel construction, though its autofocus speed is slower than newer designs. When inspecting a used copy, check for internal haze or fungus, particularly in the rear groups. The zoom and focus rings should turn smoothly without any gritty sensation. SDS verifies the aperture remains oil-free and responsive. Due to its weight and age, the mount should be checked for any play. We also test the autofocus motor coupling to ensure reliable communication with the camera body.