The Canon RF 10-20mm F4 L IS STM is a high-performance ultra-wide-angle zoom lens designed for Canon's RF-mount mirrorless cameras. With a versatile zoom range of 10-20mm and a constant F4 aperture, this lens delivers stunning wide-angle perspectives, making it ideal for landscape, architecture, interior, and astrophotography. The constant aperture ensures consistent exposure throughout the zoom range, while the advanced Image Stabilization (IS) helps to capture sharp, handheld images even in low-light conditions. The STM (Stepping Motor) autofocus ensures smooth, silent, and accurate focusing, making it perfect for both still photography and video work. Built with the renowned durability and image quality of Canon’s L-series, the RF 10-20mm F4 L IS STM is weather-sealed to withstand challenging environments, making it a reliable and rugged choice for professionals and enthusiasts looking for a wide-angle lens that excels in both performance and portability.