SIGMA 500mm f/4 DG OS HSM Sports Lens for F - Manual (Page 3)

Magnesium alloy barrel
To help minimize the weight associated with a hyper telephoto lens, the lens barrel is
made with a magnesium alloy. Both lightweight and tough, this alloy contributes to the
outstanding maneuverability of SIGMA 500mm F4 DG HSM | Sports.
Carbon fiber hood
The lens hood is made of carbon fiber, which is both lightweight and strong. In fact, the entire
lens is designed to be lightweight for outstanding performance in tough shooting conditions.
Tripod socket with 90° click stops
Since photographers often prefer to use a hyper-telephoto lens with a monopod or tripod, the
lens features a large and extremely stable tripod socket. Antistatic nickel plating on the socket