Along with Canon RF 100mm F2.8L Macro IS USM lens , Canon also announced the new Canon RF 400mm F2.8L IS USM lens. It is a super-telephoto prime for the company’s full-frame mirrorless system. The lens, which uses the same optical formula as the EF version, features 17 elements in 13 groups, with one super UD and two fluorite elements. Super Spectra and Air Sphere coatings reduce ghosting and flare. The image stabilizer reduces shake by up to 5.5 stops.