The zoom ring that is more frequently used than the focus ring has been relocated to the front side, ensuring well-balanced, comfortable holding during shooting. With the employment of the newly developed algorithm, barrel vibration transmitted to the hands and sound when the AF drive starts/stops are remarkably reduced, while AF tracking performance for continuous shooting of subjects with unpredictable movement is improved. Even during high-speed continuous shooting, stable AE control is achieved with the adoption of an electromagnetic diaphragm mechanism. Shorter minimum focus distance and increased maximum reproduction ratio allow photographers to get much closer to subjects, attaining photographic expression similar to close-up shooting.