The next best comparison opportunity is with the Canon RF 24-105mm F4 L IS USM Lens, a high-quality, professional-grade, built-for-reliability, zoom L-series lens that shares the same focal length range and max aperture opening. While the shared max aperture opening sounds good on the surface, the f/4 aperture is shared only for the widest
Introduction. The Canon RF 14-35mm F4L IS USM is a compact, lightweight and weather-sealed ultra-wide-angle zoom lens for the Canon full-frame mirrorless camera system. It offers a constant maximum aperture of f/4 throughout the 14-35mm zoom range, plus fast and quiet auto focusing. It has an optical formula comprised of 16 elements arranged in