Bower SLY650C Long-Range 650mm-1300mm f/8 Telephoto Zoom Lens for Canon High-power 650-1300mm super-telephoto focal length To ensure sharp image capture, use with monopod, tripod or chest supports to alleviate camera shake High index, low-dispersion multi-coated optical glass to reduce flare Minimum focusing distance of 16 feet Filter thread: 95mm