Very compact lightweight telephoto zoom at the expense of light intensity. Good workmanship, only the plastic bayonet seems cheap, the other M lenses have a metal bayonet. The sharpness is decent, much better than of (my) EF-M 18-55mm f / 3.5-5.6 IS STM. Note, the Canon EF-M 22mm f / 2 STM is by far the sharpest lens in the M group. The AF works at least as good as the kit lens. On my bike rides I take most of the 55-200 and the 22 mm lens.