Designed for the FUJIFILM G-mount GFX camera system, the GF 20-35mm f/4 R WR Lens is a wide-angle zoom offering a 16-28mm equivalent focal length range. Covering ultra-wide to wide-angle perspectives, this zoom is particularly well-suited to landscape, travel, and architecture applications, and the constant f/4 maximum aperture maintains consistent performance throughout the zoom range. Balancing the optical assets is an internal focusing mechanism that utilizes a linear AF motor to deliver quick, quiet, and precise focusing performance. Additionally, a manual aperture ring is featured for intuitive, tactile adjustment over exposure settings, and a Command position can also be set for camera-based control over the aperture. Ultra-wide to wide-angle zoom offers a 16-28mm equivalent focal length to suit working in a variety of situations. Three aspherical elements are featured in the optical design to control spherical aberrations for improved sharpness with Minimal distortion. , three extra-low dispersion elements and one aspherical ED element are also used to reduce color fringing and chromatic aberrations throughout the zoom range for increased clarity. The front element features a hydrophobic fluorine coating to repel moisture. Dust- and weather-sealed physical construction enables working in harsh climates and temperatures as low as 14°F.