There are two zoom lenses that every professional photographer has: an f/2.8 telephoto zoom with a field of view that corresponds with 70-200mm on a full-frame camera and an f/2.8 standard zoom with a 24-70mm field of view (full-frame equivalent). With a micro-43 camera, the crop factor on an f/2.8 standard zoom yields a zoom range of 12-35mm—or in the case of Olympus, 12-40mm. With a metal lens body, extra sealing against dust and splashwater. In comparison with professional SLR zoom lenses, remarkably light and compact, while the image quality starting at full aperture is of a professional level.
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