RF-Mount Lens/Full-Frame FormatAperture Range: f/4.5-7.1 to f/32-54One Super UD Element, Six UD ElementsDual Nano USM AF SystemCovering a variety of telephoto focal lengths, the Canon RF 100-500mm f/4.5-7.1L IS USM spans a short- to super-telephoto range within a sleek and portable form factor. The ..