Robert William Sandford: Our Vanishing Glaciers Film Size_120 With no switches on the

With no switches on the lens barrel

The sophisticated optical design and construction of the lens comprises eight elements - including one with two aspherical surfaces and another four with anomalous partial dispersion - and plays a decisive role in reducing distortion and vignetting to an absolute minimum

Nikon HB-31 bayonet lens hood for the Nikkor 17-55mm f/2

including 1 aspherical lens element and 1 ED lens element

Its a lens that pushes boundaries of imaging possibility

Robert William Sandford: Our Vanishing Glaciers Film Size_120 With no switches on theWritten by one of the most respected experts in water and water associated climate science and featuring stunning photography collected over the past four decades, Our Vanishing Glaciers explains and illustrates why water is such a unique substance and how it makes life on this planet possible. Focusing on the Columbia Icefield, the largest and most accessible mass of ice straddling the Continental Divide in western North America, and featuring