The Vario-Tessar T FE 16-35mm F4 ZA OSS is a reliable pick for professionals. With 16-35mm wide-angle zoom, this unit offers outstanding performance in a compact, lightweight package. The ZEISS T coating minimizes reflections at the lens surface. The built-in optical SteadyShot image stabilization provides added convenience. The dust and moisture resistant design of this unit ensures reliable usage.