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Special teleconverter for Olympus 40-150mm f/2.8 PRO lensIncreases maximum focal length to 420mm equivalent.Accessories for zuiko digital lens / OM-Series lens:OM-D / PEN series, OM-series,Four Thirds series
Preserves dust, splash and freezeproof properties of master lens
Compatible with announced Olympus 300mm f4.0 PRO lens coming in 2015