[liver浦]

前簾快門有什麼用途呢? 主要用來影乜相的??

[mickey_mouse]

I try to guess your question.
it is related to flash photography.
Some cameras let you set 1st curtain flash or 2nd curtain flash.

for 1st curtain flash, flash will flash just after the shutter open.

For 2nd curtain flash, falsh will flash just before the shutter close.

[mickey_mouse]

see the different effects for 1st curtain and 2nd curtain flash of the sport car in the following links.

http://www.mir.com.my/rb/photography/hardwares/classics/canont90/Canon300tlflash/index4.htm#Second