This way, you avoid them thinking the shot was taken with the "pre-flash" then moving.
这样可以避免当他们看到预闪后以为拍摄结束而移动。
2
In this shot, I was trying to get the pre-dawn glow of the sun over the mountains on one side and the stars on the other.
在照片里，我试图捕捉破晓前太阳在山头一侧越过而星星仍停在另一边的美丽景象。
3
The speedlight will pre-flash that area and lock that exposure into memory. I might caution you that you have 16 seconds to then recompose and take the shot.