This apochromatic telephoto zoom lens has a switch that converts it to macro mode at focal lengths between 200mm and 300mm with a minimum focusing distance of 95cm (37.4 inches). It offers a maximum magnification ratio of 1:2 at the focal length of 300mm. It is constructed with Special Low Dispersion glass elements to minimize chromatic aberrations across the zoom range and with a multi-layer coating that reduces ghosting and flare.