Ideal for press, sports and nature photography, the extender increases the focal length of Canon L-series telephoto or telephoto zoom lens' by a factor of 2x, with higher AF accuracy and improved communication between camera and lens.BenefitsExtends the master lens focal length by 2xCompatible with L-Series telephoto and telephoto zoom lensesOptimised lens coatingsImproved communication between lens and cameraHighly resistant to dust and waterOutstanding image qualityIdeal for press, sports and nature photography, the extender increases the focal length of Canon L-series telephoto or telephoto zoom lens' by a factor of 2x, with higher AF accuracy and improved communication between camera and lens.BenefitsExtends the master lens focal length by 2xCompatible with L-Series telephoto and telephoto zoom lensesOptimised lens coatingsImproved communication between lens and cameraHighly resistant to dust and waterOutstanding image quality