Delivering a 16-28mm full-frame equivalent field of view for the 100MP GFX system, this lens packs 3 aspherical and 4 ED elements into a compact 725g, weather-sealed body. Its constant f/4 aperture and Nano GI coating produce sharp, distortion-free results in a package no larger than a full-frame lens, while the fluorine-coated front element resists water and dust. This is the ideal ultrawide zoom for GFX landscape and architecture photographers who need rugged, high-resolution performance in challenging outdoor conditions.