The Canon RF 7-14mm f/2.8-3.5 L Fisheye STM is the largest full-frame mirrorless zoom lens in existence today (January 2023). The lens features a 190-degree field of view at 7mm, larger aperture, weather resistance (see below), an alternative drop-in filter system for all-purpose use, and an STM autofocus system that should perform well with video as well as still images.