Double Your Focal Length Extends the reach of compatible Canon EF lenses by 2x, perfect for wildlife, sports, and distant subjects. Optical Quality Maintains sharpness and contrast with minimal loss of image quality. Compatibility Works with select Canon EF telephoto lenses. Durable Build Professional-grade construction with precise electronic contacts for autofocus and aperture communication. Easy to Use Quick and secure attachment to your lens for hassle-free telephoto extension. Condition: Used, in good working condition Clean optical glass with no scratches or haze Fully functional autofocus and aperture communication Exterior shows minor signs of normal use 🎁 Included in Sale: Canon Extender EF 2x II Front and rear caps 🌍 Ideal For: Wildlife photography 🦁 Sports photography 🏆 Birding and distant subjects 🐦 Photographers looking to double lens reach without carrying a longer lens 🎯