SPEED OF LIGHT
When it comes to photography, almost any shutter speed could be considered a long exposure depending on the chosen subject matter. As objects move, their speed in relation to your shutter time ‘burn’ their motion into the sensor/film over the distance they’ve traveled. This is the case for anything moving, regardless of the speed of the subject - clouds, people, water, a snail or even the motion of the earth, can all be blurred with the right shutter speed choice. This blurred motion you see in the image also becomes more apparent when the moving subject is much brighter than the background it is passing.
One of the best ways to practise with long exposures, and understand the fundamentals of what is going on, is with car light trails.
WHERE
The best place to shoot car trails is from an overpass or bridge over a busy road. Two way traffic with multiple lanes will give you the white headlights coming towards you and the red tail lights going away from you, and positioning yourself between the two will give a good balance of both. However, just having car trails in the shot is ok for practising and learning, but if you want to get a
