The SGF-01 lens foot is an improved replacement foot for the Sigma 150-600mm F5-6.3 lens. The foot has additional functions, is made of sturdy aluminium and is Arca-Swiss compatible. With this SFG-01, it is no longer necessary to place a quick release plate under the tripod clamp. By changing it, you also reduce the weight of the entire set-up while maintaining the low profile. The Sigma foot can be easily replaced with the Leofoto foot via four screws. At the bottom of the SFG-01 there is a ¼-inch and a 3/8-inch thread. In addition, the foot has a Leofoto Quick Detatch (QD) socket for attaching a Leofoto carrying strap. This way you can attach the sturdy camera strap directly to your lens foot.