The FUJIFILM XF 10-24mm f/4 R OIS WR is a versatile wide-angle zoom now featuring robust weather sealing along with more intuitive handling. This 15-36mm-equivalent zoom is characterized by its constant f/4 maximum aperture and advanced optics, which utilize a series of extra-low dispersion and aspherical elements to correct both chromatic and spherical aberrations for high color accuracy, sharpness, and accurate rendering. Benefitting the optics, an updated optical image stabilization system minimizes the appearance of camera shake by 3.5 stops for improved sharpness when shooting handheld and a stepping motor offers quick and quiet autofocus performance. Additionally, a reworked physical design includes slimmer focusing and aperture rings, a lockable 'A' position, and a f/stop scale, and the lens now sports a dust- and moisture-sealed design for working in harsh environments. Constant f/4 maximum aperture offers consistent performance throughout the zoom range and also helps to realize a relatively compact and lightweight design. Four aspherical elements control distortion and spherical aberrations, which helps to improve sharpness and realize more accurate rendering. The stepping motor, along with an internal focusing design, affords fast and near-silent autofocus performance that benefits both stills and video applications. The rounded seven-blade diaphragm contributes to a pleasing out-of-focus quality to benefit the use of selective focus and shallow depth of field techniques. The weather-resistant design prevents dust and moisture from entering the lens and to enable worry-free use in inclement conditions and freezing temperatures as low as 14°F.