Canon 4113C002 EXT. RF1.4X Teleconverter for RF Lenses

The Canon RF 1.4x Extender is a teleconverter engineered for photographers who need additional reach from their compatible Canon RF lenses without the size and cost of a dedicated super-telephoto. By multiplying the focal length by 1.4x, this extender transforms a 600mm lens into an 840mm optic or a 100-500mm zoom into a 140-700mm, opening up new possibilities for wildlife, aviation, and sports photography. The optical design incorporates high-refraction, low-dispersion glass elements that maintain sharpness and control chromatic aberration, while optimized coatings suppress ghosting and flare even when shooting toward bright light sources.

Built to the same professional standards as Canon's RF lens lineup, the extender features a dust- and water-resistant body with a heat shield exterior that reflects sunlight and resists heat buildup during prolonged outdoor use. It mounts directly between the camera body and a compatible RF lens, maintaining full electronic communication for autofocus, image stabilization, and EXIF data. Photographers should be aware that the extender reduces the effective maximum aperture by one stop, which can impact autofocus speed in dim conditions, but in adequate light the AF system continues to perform reliably with supported camera and lens combinations.