Canon RF800/11 is STM(N)

The RF800mm F11 IS STM super-telephoto lens provides a long 800 millimeter focal length and is the first compact and lightweight 800mm super telephoto lens in the RF lineup. This lens is ideal for bird, wildlife, outdoor sports, and aviation photography or, when you just want to bring those subjects in the distance closer to you. The RF800mm F11 IS STM lens features an STM focusing system ideal for fast and quiet focusing when tracking elusive subjects out in nature. Additionally, an optical image stabilization system with up to 4 stops of shake correction makes it easy to use either hand-held or with a monopod. It will also accept an RF 1.4X or 2.0X teleconverter^ to increase your focal length to a staggering 1120mm or 1600mm respectively.

First Compact and Lightweight 800mm Super Telephoto RF Lens.
Excellent Portability made Easier with an Extending / Retracting Locking Lens Barrel Design.
Gapless double-layer Diffractive Optics (DO) reduce Chromatic Aberration for High Image Quality.
High Image Quality at a fixed f/11 Aperture.
Optical Image Stabilization with up to 4 Stops of Shake Correction.