| Shutter Speed | |
The aperture and shutter speed together are used to control the amount of light striking the film or sensor. This is crucial to get a decent result. The shutter speed also affect the apparent movement in the picture. Most often the photographer will want to minimise that effect of movement in the image. This means that a relatively fast aperture is needed. On a calm day outside 1/15s is often adequate, provided that the camera is held on a tripod. A shutter speed of 1/250s may be needed to 'stop' someone running across the field of view but than all sense of movement would be lost. In these circumstances it is often better to use a lower shutter speed and move the camera with the subject. This will mean that the subject is relatively still but the background is blurred. This effect is known as panning. When photographing water a fast shutter speed can be used to 'freeze' the water. Sometimes this works very well but is is worth trying a different approach. try using a tripod and a sutter speed of around 1/8s. This means that the movement of the water is recorded and it looks a bit 'woolly'. This can be very effective. |
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