Ideal for press, sports and nature photography, this compact extender increases the focal length of Canon L-series telephoto or telephoto zoom lens' by a factor of 1.4x, with higher AF accuracy and improved communication between camera and lens.BenefitsExtends the master lens focal length by 1.4xOutstanding image qualityHighly resistant to dust and waterImproved communication between lens and cameraOptimised lens coatingsCompatible with L-Series telephoto and telephoto zoom lensesIdeal for press, sports and nature photography, this compact extender increases the focal length of Canon L-series telephoto or telephoto zoom lens' by a factor of 1.4x, with higher AF accuracy and improved communication between camera and lens.BenefitsExtends the master lens focal length by 1.4xOutstanding image qualityHighly resistant to dust and waterImproved communication between lens and cameraOptimised lens coatingsCompatible with L-Series telephoto and telephoto zoom lenses