Aimed mainly at enthusiasts who are looking for a door into super-telephoto lenses and who want to travel light, Canon's RF 800mm F11 IS STM Lens ticks every box. The compact and lightweight lens is designed specifically for use on Canon's R Series cameras such as the Canon R5. It has a huge 800mm focal range that is capable of capturing super-sharp and detailed photographs and video footage; all helped by the powerful 4-stop in-built image stabiliser. This lens also features Canon's diffractive optics technology which is how it's been possible to build such a lightweight and compact telephoto lens, whilst giving you controlled chromatic aberrations.