Marelux Nylon Focus Gear (Sigma 14-24mm F2.8 DG DN)

An essential, multifunctional addition to your image-making arsenal, use this Marelux Nylon Focus Gear with your underwater housing to control focus, or pair it with readily available follow focus units or lens motors to control focus on your lens in everyday shooting environments. Made of strong yet lightweight nylon, this gear slides onto your lens and fits snugly to avoid slipping.