This is a very sharp and well-designed lens for macro and close-up photography. It delivers up to 2:1 macro capability, or 4:1 with a 2x teleconverter. The optical design effectively suppresses chromatic aberration. The design uses two focus groups, allowing for very close focus. The lens is equipped with an optical stabilisation system that works with the in-body stabilisation of compatible cameras to deliver up to 7 stops of compensation. Outdoor photographers will love the IP53 dustproof and splashproof qualification, and the freezeproof protection down to -10°.