Sony Carl Zeiss Vario-Tessar T FE 16-35mm F4 ZA OSS (SEL1635Z) Front and lens caps Lens hood Lens case 16-35mm wide-angle zoom for 35mm full frame format bodies offers outstanding performance in a compact, lightweight package. With a dust and moisture resistant design, the compact and lightweight Sony Vario-Tessar T* FE 16-35mm f/4 ZA OSS Lens covers your wide-angle zoom needs and is designed for full-frame FE-mount cameras but can also be used on APS-C E-mount cameras as well. A constant f/4 maximum aperture offers consistent performance throughout the zoom range and is especially beneficial when working low-light conditions. Also benefiting working in dim light is Optical SteadyShot image stabilization, which serves to minimize the appearance of camera shake by up to four shutter speed steps. 16-35mm wide-angle zoom for 35mm full frame format ZEISS T* (T-star) coating ED & Aspherical Elements Constant F4 maximum aperture Dust and Moisture-Resistant Construction Built-in Optical SteadyShot image stabilization