Tuesday, 17 January 2012

shutter zoom image

The amount of light reaching your camera's sensor is known as the exposure and this is controlled by two items on a camera - the aperture and shutter speed. The aperture is a variable hole in front of the lens that adjusts to let more or less light through and the shutter speed is a cover over the sensor that controls the length of time that the light reaches it.

panning image

In photography, panning refers to the rotation in a horizontal plane of a still or video camera. Panning a camera results in a motion similar to that of someone shaking their head "no" or of an aircraft performing a yaw rotation.

blurred motion

When a camera creates an image, that image does not always represent a single instant of time. Because of technological constraints or artistic requirements, the image may represent the scene over a period of time. As objects in a scene move, an image of that scene must represent an integration of all positions of those objects, as well as the camera's viewpoint, over the period of exposure determined by the shutter speed. In such an image, any object moving with respect to the camera will look blurred or smeared along the direction of relative motion. This smearing may occur on an object that is moving or on a static background if the camera is moving.