Movement In Brum. ICM, Motion Blur, Shutter drag etc… etc….
If you’re interested, this is instagram so you’re probably not, essentially just lower your shutter speed right down and move your camera around, or keep your camera still and focus on a subject while movement occurs around it.
Slowing the shutter speed will also allow more light into your sensor, you’ll need to negate that by lowering the ISO (right down) and raising your Aperture, F16 or larger is good, this will help reduce the...