We've just published our Olympus 12-40mm f/2.8 lens review over on SLRgear, and it by all counts, it's an amazing piece of glass. Yet-to-be released, this bright, fast zoom lens was introduced alongside the Olympus OM-D E-M1 and is part of the company's new "Zuiko PRO" line of professional-grade Micro Four Thirds lenses. The optic's 12-40mm focal range translates to a 24-80mm field of view in 35mm terms, and with a constant ƒ/2.8 aperture, it's very versatile and works great in low-light settings. The lens is also rugged, with...
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