When you change the shutter speed in a timelapse, you can control how people moving in and out of the frame transition. With faster shutter speeds the movements are more jagged; you can make out each individual. With longer shutter speeds, the movements are a lot smoother. In this video Jay P Morgan from The Slanted Lens gives a nice demonstration on the impact of changing shutter speed in timelapses:
There are four elements that impact a timelapse:
- shutter speed
For this demonstration Morgan just manipulates one of the four: shutter speed.
To change shutter speed, especially if using a slower one in bright conditions, you needs to stop a lot of light from entering the camear. That’s where neutral density (ND) filters come into the picture. ND filters allow the use of really slow shutter speeds—1 second, 2 seconds and even 4 seconds—in bright conditions.
The other tool that Morgan uses in this demonstration is the Syrp Genie Motion Control. It allows a controlled panning while the timelapse sequence is being shot and adds a bit of spice to the footage. Morgan uses two of them: a Genie and a Genie Mini. Both can be controlled via apps and be given a pre-determined panning distance.
The shot above is from a timelapse shot at 1/60 of a second. As you can see, the frames appear as if frozen. You can identify each person quite easily.
At 1/25 of a second, people moving in an out of the frame are starting to blur a bit. From thereon, as the shutter speed is slowed down, movement becomes more and more blurred:
Adding motion blur to your frames might just be the touch that makes your timelapse stand out from the crowd.
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