The Canon RF Multiplier 1.4x extends the range of certain Canon RF-mount lenses. It enlarges the image by 2x and maintains full communication between lens and body, enabling metering, autofocus and image stabilization, as well as Exif data transmission. What's more, it's dust- and water-resistant. Finally, it incorporates an external heat shield to ensure optimum performance in all conditions.
The Canon Multiplier RF 1.4x is compatible with Canon lenses RF 100-500mm F4.5-7.1 L IS USM (300 to 500mm only), RF 600mm F11 IS STM and RF 800mm F11 IS STM.