The 200mm Telephoto Macro lens can focus from infinity to a 1:1 magnification ration using no attachments. Excellent contrast is achieved by use of AD (Anomalous-Dispersion) glass. The circular aperture provides a pleasing, natural defocusing effect. Comprehensive and absolute focus control is obtained with a detachable tripod-mounting collar, focus-hold button and focus range-limiter. The focusing ring is automatically deactivated while the camera is in AF mode.