1. Understanding The Basics
Understanding shutter speed, aperture, and lighting will up your motion photography game immensely. Controlling the shutter speed on an iPhone is trickier because of the fixed aperture, but that doesn’t mean it can’t be done.
The shutter speed of your camera plays a huge role in how the shots will turn out. The basic rule of thumb is this: the faster the shutter speed, the sharper your subject’s motion will look. The slower the shutter speed is, the more movement will be captured in the image, and the blurrier the subject will be.
But unfortunately, it's not as simple as adjusting your shutter speed, and that's because mobile photography has limitations. iPhones don’t allow you to control aperture. It’s fixed at f/2.2, which allows a lot of light in. That means, in order for the camera app to "correctly" expose an image, the shutter speed has to be fast.
Because most people don’t want blurry photos, that combo works well. But when you are trying to get motion blur, the fast shutter speed makes it nearly impossible. That's why I use several techniques that allow me to trick my phone’s camera into slowing down its shutter speed.