EF mount; super telephoto lens; Fluorite and Ultra-low Dispersion-glass; internal focusing; full-time manual focus; 400mm focal length; f/5.6 maximum aperture
EF mount; telephoto lens; Ultra-low Dispersion glass with Fluorite elements; inner focusing ring; 135mm focal length f/2 maximum aperture Ring USM motor
Constant f2.8 3.2x zoom lens developed exclusively for use with Nikon DX Format, optimized for Nikon digital SLRs; Dust and waterproof rubber sealing mount