Zoom lenses are typically thought to be less sharp than their prime focal length brethren. Fortunately, Phase One and Schneider Kreuznach are anything but a typical pairing. The SK75-150mm LS offers a fantastically long zoom range with a 35mm equivalent of 47-93mm, offering prime image quality throughout the zoom range. The Blue Ring designation means that the SK 75-150mm LS can resolve detail past 100 megapixels. Perhaps Phase One’s most versatile zoom, the SK 75-150mm LS can be used for a variety of applications, essentially combining 4 prime lenses into one body. Combine this lens with the SK 40-80mm and you have basically the entire Phase One range of focal lengths in just two lenses. Oh, yeah. And it has a leaf shutter so you can sync with strobes at up to 1/1600s. Boom.