Extend the reach of select Canon RF-mount lenses with the Canon Extender RF 1.4x. This teleconverter magnifies the image by 1.4x 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. {Key Features} - RF-Mount Teleconverter - 1.4x Magnification Factor - Maintains Metering, Autofocus, and IS - Dust and Water Resistant {Lens Compatibility} - RF 100-500mm f/4.5-7.1L IS USM (can only be used within 300-500mm range) - RF 600mm f/11 IS STM - RF 800mm f/11 IS STM {Box Contents} - Canon Extender RF 1.4x - Canon Extender Cap RF - Canon Lens Dust Cap RF - Canon Lens Case LP811