For most of the past century, high-speed imaging in one form or another has been a valuable tool for analyzing motion too rapid to be seen by the unaided eye Although the methods of recording the images have changed drastically over time, the goal has remained the same. Film-based imaging remains the recording medium of choice for many specialized high-speed applications. Electronic recording devices, however, have gained in popularity since standard video cameras were modified in the 1970s with mechanical rotating shutters to reduce image blur. More recently, systems have emerged that are designed exclusively for high-speed recording, supplying frame rates many times faster than standard commercial video recording speeds in the United States and Europe (NTSC /PAL).
展开▼
