Bundle Items Include: 1 x Canon RF 800mm f/11 IS STM Lens, 1 x UV Filter, 1 x Lens Cap Keeper, 1 x Cleaning Kit. Super long reach, super compact design, the Canon RF 800mm f/11 IS STM is a unique telephoto prime featuring a distinct mixture of focal length and form factor. Characterized by its retractable design and a fixed f/11 aperture, this lens's sleek profile makes handheld super-tele shooting a very real possibility, and four stop-effective optical image stabilization further helps to achieve sharp imagery when working in difficult lighting conditions.. Super-telephoto prime is designed for use with full-frame Canon RF-mount mirrorless digital cameras. Fixed f/11 aperture contributes to the sleek and portable form factor as well as a balanced mixture of depth of field and sharpness. Gapless dual-layer diffractive optics contribute to a marked reduction in chromatic and spherical aberrations as well as benefit the design of a relatively compact and lightweight lens.. Key Features: