500mm f/8 Telephoto Lens (T Mount) with 2x Teleconverter (=1000mm) for 30D, 40D, 50D

This simple, yet high-grade adapter provides excellent optical premium at an affordable price.. This 2x teleconverter attaches to any T-mount (screw mount) lens, and effectively doubles the focal length of that lens, allowing the photographer to get much closer to the action. Perfect for nature, sports and surveillance photography. It features an aperture range of f/8 - f/32 and a rotating tripod mount, and it comes with a soft carrying case. This powerful 500mm f/8 Manual Focus Telephoto Lens utilizes aluminum alloy construction, computer-designed all-glass optics and the latest optical multi-coating techniques to provide crisp, high-contrast, virtually flare-free images of distant subjects, even under adverse lighting conditions