焰火发射的那一刻就可以按下快门，一直按住不放，直到你要拍摄的焰火完全熄灭，这个过程一般会持续几秒种 。
Hit the shutter as the firework is launching and hold it down until the burst has faded, typically a few seconds.
其次，重新定位相机（仍按住快门按钮），使拍摄对象不在中央。
Second, reposition your camera (while still holding the shutter button) so the subject is away from the center.
拍摄时，如果一直按住预景深自动曝光锁定按钮，相机就能以锁定的曝光值重复拍摄。
If the preview AE lock button is kept pressed while shooting, it is possible to shoot repeatedly with the locked exposure value.
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