Olympus has unveiled a high-end standard zoom to match the E-M1: the M.Zuiko Digital ED 12-40mm F2.8 PRO. It offers a 24-80mm equivalent range and is dust, splash and, freezeproof, and uses a manual focus clutch design similar to the 12mm F2 and 17mm F2.8 primes. Olympus has also announced the development of a matching 40-150mm F2.8 telezoom, which is scheduled for release next year. Click through for more details.
News: Digital Photography Review (dpreview.com)