The GF 23mm f/4 R LM WR from FUJIFILM offers an exceptionally wide field of view, functioning as an ultra-wide 18mm-equivalent prime lens tailored for the G-mount GFX camera system. This lens is particularly advantageous for architecture and interior photography, featuring a design that incorporates two aspherical elements to minimize distortion and spherical aberrations, ensuring precise image rendering. Furthermore, it includes several low dispersion elements that enhance color accuracy and clarity. A Nano GI coating has been applied to mitigate lens flare and ghosting, thereby improving contrast and color fidelity. In terms of functionality, the lens is equipped with a linear autofocus motor and an internal focusing mechanism, providing rapid and silent focusing capabilities. A manual aperture ring allows for straightforward exposure adjustments, while a Command position enables aperture selection directly from the camera. Additionally, the lens is designed to be dust, freeze, and weather-resistant, making it suitable for challenging environmental conditions.