Covering 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 modest maximum aperture enables a relatively portable design that is well-suited to handheld, walkaround use and optical image stabilisation also helps to steady photos and videos by up to five stops when working in difficult lighting conditions. This lens is also characterised by its advanced optical design, which includes a series of Super UD and UD elements to greatly reduce chromatic aberrations and colour fringing throughout the zoom range for a degree of clarity and colour accuracy.