[altai]

最近拍 Halloween, 環境比較暗而動作多又快，發覺唔識 set 支閃燈：

燈 set ETTL , 機 set Av, 快門好慢因為現場暗黑，出來效果曚晒，
燈 set ETTL , 機 set Tv 1/125. 唔夠曝，under,
機 set 去 M 同 P 都 under，好似淨係識得補光。

呢啲場合，按理應該機用 M，快門 1/250（動作有點快），光圈 5.6 左右，
然後支燈自動同我俾光，應該點 set?

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For fast shutter, you will lose the mood of ambient light. Then you might need another flash to flash onto the ceiling if indoor.
If you find the photo is under ETTL, you can use flash compensation or if the object is more or less fixed distance to you, you can use M mode on your flash.