More improtantly, however, he amass

More improtantly, however, he amassed three volumes of photographic work on human and animal motions that provided scientific documentation of of some of the subtle differences between normal and pathological gait.
movement analyst today have quite an array of camera types from which to choose. the type of movement and the requirements of the analysis largely determine the camera and analysis system of choice. those most commonly used for documenting human movement sequences are video cameras and 8 and 16 mm movie cameras.
because of widespread availability, durability, and ease of use of modern video camera and playback units, video is the most common motion picture medium for qualitative analysis of human
movement today.
standard video provides 60 resolvable pictures per second, which is perfectly adequate for many human movement applications. scientists and clinicians performing detailed quantitative study of the kinematics of human motion typically require a more sophisticated video camera and playback unit, with higher rates of pictures capture. digital video capture system deigned for human movement analysis are commercially available with frame rates of up to 2000 hz. for both qualitative and quantitative analysis, however, a consideration often of greater importance than camera speed is the clarity of the captured images. it is the camera's the shutter is open when each picture in the video record is taken, the faster the movement being analyzed, the shorter the duration of the exposure time required to prevent blurring the image captured.
another important consideration when analyzing human movement with video is the number of cameras required to adequately capture the aspects of interest. because most human movement is not constrained to a single plane, it is typically necessary to use multiple cameras to ensure that all of the movement can be viewed and recorded accurately for a detailed analysis.