When you're working on photo and video production, the Neewer CA170 Camera and Photo Accessory for Sigma Bf keeps the setup approachable. A well-chosen accessory can simplify the way the whole setup works. The Neewer CA170 Camera and Photo Accessory for Sigma Bf is made for photo and video production and fits naturally into home, studio or location setups. It's designed for Sigma Bf check your exact model before ordering.