The wide-angle zoom lens is made to work with Canon RF-mount mirrorless full-frame cameras. Working in available light conditions is made easier with a constant f/2.8 maximum aperture, which maintains constant illumination throughout the zoom range. To improve clarity and color accuracy, two UD (Ultra-Low Dispersion) elements reduce color fringing and chromatic aberrations. For better sharpness and accurate rendering, spherical aberrations and distortion are corrected using three aspherical elements. Lens elements have been coated with Air-Sphere Coating (ASC) to minimize ghosting and backlit flaring, preserving light transmission and high contrast under intense lighting. By reducing the appearance of camera shake by five stops, an optical image stabilizer makes it easier to work with slower shutter speeds and in low light. Nano