Standard lens series nikon af s nikon fx lens mount nikon f lens speed 14 focal length 58 mm suitable for sensor types aps c full frame construction prime lens area of use portrait photography night photography astrophotography action photography focus auto focus manual focus af motor ultrasonic motor usm max magnification 17 7 closest focusing distance 58 cm focal length equivalent to 35mm camera 87 mm lens construction groupselements 69 n