Spanning an impressive range of super telephoto focal lengths, the 650-1300mm f/8 Telephoto Zoom Lens is well-suited to photographing a variety of long-distance subjects. This 2x zoom has a fixed aperture setting of f/8 at the 650mm position and f/16 at the 1300mm position to ensure a balanced mixture of depth of field and clarity without the effects of diffraction. Individual lens elements also feature a multi-coating to help reduce lens flare and ghosting for greater contrast and clarity when working in strong lighting conditions.