Overview

The Fujifilm GF 45-100mm F4 is a weather-resistant standard zoom for GFX medium format cameras, offering five-stop OIS and a 36-79mm equivalent range. Optically, it delivers outstanding sharpness across the zoom range with excellent edge performance, minimal chromatic aberration, and well-controlled distortion. Weaknesses include noticeable vignetting at the wide end and potential flare in extreme conditions. Build quality is excellent with a robust magnesium alloy construction and smooth zoom ring, though the lens is heavy at over 2.2 lbs and front-heavy on smaller bodies. It suits portrait and landscape photographers who prioritize image quality and stabilization over portability.