Canon Extender RF 2x

Canon Extender RF 2x 
Extend the reach of select  Canon  RF-mount lenses with the  Extender RF 2x . This teleconverter magnifies the image by 2x and retains full communication between the lens and camera body, enabling metering, autofocus, and image stabilization as well as the transmission of Exif data. Additionally, the Extender RF is dust and water resistant and has a heat shield exterior to ensure optimal performance in a range of conditions.
Lens Compatibility
RF 100-400mm f/5.6-8 IS USM
RF 100-500mm f/4.5-7.1L IS USM (can only be used within 300-500mm range)
RF 400mm f/2.8L IS USM
RF 600mm f/11 IS STM
RF 800mm f/11 IS STM
RF 600mm f/4L IS USM