In panning you follow the subject with the camera during the action, actually tracking the subject. Panning is when you do essentially the opposite. In that case the non-moving area around the subject will be captured with no blur, and only the subject will be blurred. Traditional blur is when the camera is being held still and a moving subject is photographed at a slow shutter speed. The slower the shutter speed, the easier it will be to see the resulting blur. For instance, blur can be brief or pronounced. A good rule of thumb would be that 1/500 second is a good starting point for stopping motion that's fairly fast.Īs you begin to work with shutter speeds, you'll learn there are different types of blur. Thus, the shutter speed you choose has to be relative to the action you're trying to stop. Trying to freeze those helicopter blades might require a shutter speed above 1/1000 second stopping the movement of the bike might be possible at 1/250. The speed of the blades of a helicopter in flight is much greater than that of a kid biking down the street. When you want to take a picture that stops the action of your subject, you have to first consider the speed of the action. First, let's look at how a high shutter speed can stop action. A slow shutter speed can let action blur or even make a moving subject seem to disappear. A fast shutter speed can freeze action, even stopping a hummingbird's wings. The camera's shutter speed determines how the action in a photo is recorded. Most cameras have shutter speeds that range from several seconds-some as long as 30 seconds-to fractions of a second-up 1/1000 of a second and above. The slower the shutter speed the more light that enters the camera. The shutter is the mechanism that determines how fast the aperture will open and close. The varying sizes of the opening are called f/stops and are referred ao in numerical terms: f/4, f/5.6, /8, f/11 and so forth. The aperture is the opening that can be adjusted to allow more or less light to enter the camera.
One is the aperture and the other is the shutter. There are two elements in every camera that affect how much light enters the camera and finds its way through the lens to the camera's sensor. And it's being able to control those fractions of a second that makes this possible.
The camera, however, is able to stop time from moving forward, giving us the opportunity to study that fraction of a second. As humans, we see what's in front of us as a continuing chain of events. One thing that makes photography unique is its ability to freeze a moment in time.
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