Fuji FUJIFILM Fujinon GF 23mm f/4 R LM WR Autofocus Lens for G-Mount, Black Review

The Fujifilm Fujinon GF 23mm f/4 R LM WR is an ultra-wide prime lens designed for the Fujifilm G-mount medium format system. It delivers an equivalent field of view of roughly 18mm in full-frame terms, making it a compelling option for landscape, architecture, and environmental portraiture. The lens features weather-resistant construction and a linear autofocus motor, both important for field work in varied conditions.

At f/4, the maximum aperture is modest but typical for ultra-wide medium format glass, and it helps keep the lens relatively compact and affordable within the GF lineup. The 82mm filter thread is standard across many GF lenses, which simplifies filter management for shooters building out a kit. The used example here is listed at $1,093, which represents solid value compared to typical new pricing for Fujifilm medium format optics. Build quality and optical performance are expected to be high, in line with the GF series reputation, though without user feedback we cannot speak to real-world handling or corner sharpness.