Complex sentence: GoPro cameras were used for sequences where regular cameras were restricted, and low-motion cameras, such as the Phantom Cam (which captures 2,000 frames per second), were used for climactic low-light scenes.
Split into simpler sentences: GoPro cameras were used for sequences where regular cameras were restricted. Slow-motion cameras, such as the Phantom Cam (which captures 2,000 frames per second), were used for climactic low-light scenes.