Overview

The OM System 12-40mm F2.8 Pro II is a versatile standard zoom for Micro Four Thirds, offering fast autofocus and excellent weather resistance. Optically, it delivers nice bokeh at the longer end but has the depth of field equivalent to f5.6 on full-frame. Build quality is robust, though the lens is large and heavy. It's a jack of all trades, master of none, and best suited for those wanting a single, durable all-purpose lens.