Teleconverter extender camera fitting nikon f magnification 2 x suitable for camera type nikon for camera series nikon d for lens series nikon af s lens mount nikon f thread diameter 685 mm area of use animal photography sports photography astrophotography aperture range 28 32 lens construction groupselements 56 coatings sml anti reflective coating lens diameter 68 mm length 45 mm weight 240 g colour black included in delivery case rea