• High Power Telephoto Lens - This 420mm to 800mm lens is designed to capture clear shots of long distance cameras and increase photography flexibility. This premier zoom long lens allows photographers to capture sports and wildlife like never before • ENHANCED ZOOM FUNCTION - The 2x Teleconverter doubles the power of your lens to 1600mm. Whether you are shooting impeccable wildlife, distant landscapes, or the wonder of heaven, this lens will bring you closer to the subject than ever thought before • BEST PRECISION - focal length 420mm-800mm, filter thread 62mm, allow you to take complex detailed pictures. The sophisticated f/8.3 aperture ensures that your photos are crisp, crisp, and beautifully accentuated your subject • RF MOUNT COMPATIBILITY - Tuned for RF mounting, this zoom lens easily locks onto your camera and maximizes camera lens integration for superior image quality. This feature allows for sharp, detailed shots every time • HIGH QUALITY CONSTRUCTION & DESIGN - Boasting high index and low dispersion, this telephoto zoom lens offers exceptional clarity and minimal distortion. Precise manual focus gives you full control of the image