Canon RF 800mm f/11 IS STM Lens Crop Sensor EF-S Cross Quad Pixel Phase-Detection AF:

Cross Quad Pixel Phase-Detection AF: Delivers accurate and swift autofocus

thanks to two aspherical lenses and special highly refractive glass with anomalous partial dispersion

Fast Autofocus: Object Detection AF with 225 selectable areas and high communication speed

4 maximum aperture excels in low-light conditions and allows for selective focus control

Canon RF 800mm f/11 IS STM Lens Crop Sensor EF-S Cross Quad Pixel Phase-Detection AF:RF Mount Lens Full Frame Format Fixed f 11 Aperture Retractable, Locking Lens Barrel Gapless Dual Layer Diffractive Optics STM Stepping AF Motor Optical Image Stabilizer Customizable Control Ring Compatible with RF Extenders