[gogoso]

各位ching、c 姐，小弟用400d都有2年，最近心血來潮想試吓閃燈用後簾，但發覺喺菜單揀完都係無變，一樣係前簾同步，點解﹖請指教。

[pizza2005]

你用咩閃呀?

[gogoso]

內閃。

[jackywong6288]

你試下較快門1秒以上應該睇到分別..................

[h0001244]

It has been discussed in following link

http://www.dcfever.com/forum/read.php?f=12&i=39229&t=39229

[gogoso]

多謝ching回覆，我有試過較慢快門用後簾測試，但都是閃完燈才關快門簾！是否部機有問題﹖

[Obi-Wan]

try try using flash with 1 sec on moving objects & test the difference

[ks chung]

gogoso,
你再試多次, 將時間+到2秒. 然後按下快門. 第一閃是預閃, 你要等2秒, 跟著支燈會再閃一次! C記是這樣的!

[h0001244]

<<閃完燈才關快門簾>> is very normal
otherwise how can the sensor catch the flash light ? ?

前簾
pre-flash --> open shutter & flash --> expose --> close shutter

後簾
pre-flash --> open shutter --> expose --> flash & close shutter

[gogoso]

哈哈！成功啦，多謝各位ching教路。