Kit Includes: The Canon Extender RF 2x is a teleconverter designed for Canon RF-mount mirrorless cameras that doubles the focal length of compatible telephoto lenses while maintaining full electronic communication between the lens and camera, including autofocus, image stabilization, and EXIF data transmission. It is built for select RF lenses such as the RF 100-400mm, RF 100-500mm (within 300–500mm range), RF 400mm f/2.8L, RF 600mm f/11, RF 800mm f/11, and RF 600mm f/4L, making it ideal for wildlife, sports, and long-distance photography. The extender features a dust- and water-resistant construction with a heat shield exterior for durability in challenging shooting conditions. | Canon | | Extender RF 2x 4114C002 | 5PC Accessory Bundle | Best Buy