I apologize for the delay in responding, and thank you for posting. Rotating-prism cameras like the Photo-Sonics and Hycam reach very high frame rates, but the prism creates a slight image softness and the film isn't held perfectly still, so they're best for scientific and effects shots where speed matters more than sharpness. Intermittent-movement high-speed cameras give sharper images at lower speeds. Today high-speed digital cameras such as the Phantom line cover most of these jobs. I hope your slow-motion shots worked out!