The fastest and widest of Nikon's full-frame zooms,this pro lens(1,800,street)scales up to 21-36mm on the Nikon D300.Introduced with the full-frame D3 and unofficially matched to Nikon's 24-70mm and 70-200mm f/2.8 lenses,this superfast,constant-aperture,full-framer is almost in a class by itself.HANDS ON:A large chunk of glass,with a fixed lenshood,this internal-focusing Nikon weighs a hefty 2.19 pounds.It incorporates expensive,high-tech aspheric and low-dispersion glass elements.
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