US Patent 7394604 Optical apparatus

An optical apparatus having a grip for gripping a camera body. The apparatus includes a lens element, a lens barrel configured to retain the lens element, a focus detection sensor disposed on an outer peripheral portion of the lens barrel, and a ring-shaped operation member configured to manually adjust at least focusing or zooming. The focus detection sensor is disposed on an outside of the ring-shaped operation member and on a same side as the grip of the camera body with respect to an optical axis of the lens element.