Photographers who are looking for a camera lens with a focal length up to 1,300 mm will find the Bower ultra-telephoto lens an ideal choice. This Bower camera lens is a T-mount lens, meaning that the aperture is not controlled by the camera body. Instead, novice and expert photographers who are using this 650-1300 mm f/8.0-16.0 lens must use it in aperture-priority or auto-exposure mode. The Bower ultra-telephoto lens is designed to work on full-frame digital cameras as well as on small-format cameras, making it a highly functional and versatile camera companion. When paired with a monopod or tripod, it makes sharp, clear, and crisp image results at huge distances possible. The Bower ultra-telephoto lens has a unique two-touch focusing and zoom system composed of two push-pull rings. This allows photographers to control focus fast and easy with this Bower camera lens. Another nice feature of this 650-1300 mm f/8.0-16.0 lens is the built-in tripod mount, which provides greater flexibility to the photographers. This lens is a good choice for both professional photographers and budding camera enthusiasts who require extra telephoto capabilities in their lenses.