Teleconverter extender camera fitting nikon f magnification 17 x diopters 1 5 suitable for camera type nikon for camera series nikon d for lens series nikon af s lens mount nikon f thread diameter 66 mm area of use animal photography sports photography astrophotography aperture range 28 lens construction groupselements 55 coating multi coated length 32 mm weight 200 g colour black included in delivery lens pouch lens cap instruction man