本文分别讨论了狭缝扫描高速摄影系统、分幅高速摄影系统以及网格高速摄影系统的信息量计算公式.在讨论分幅摄影系统时,指出了光快门作用对空间自由度的影响. In this paper, the formulas for calculating the information amount of the slit scanning high-speed photography system, the framing high-speed photography system and the grid high-speed photography system are respectively discussed. When discussing the framing system, the influence of light shutter on the spatial freedom is pointed out.