'Shutter period' diaporamas de présentation

What is the significance of using a tripod

Of course, everyone knows the long exposure of the low-speed, so I will not be wordy. It is generally acknowledged that the handheld shooting shutter speed should not be less than the reciprocal speed of the focal length, that is, a 50 mm lens should be able to hold stably at 1/60 second. But in fact, this problem is extremely complex, involving the effects of "machine vibration" and "shake" caused by SLR when you are shooting......

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