Information about Shutter Priority
Shutter priority refers to a setting on automatic cameras that ensures proper exposure by keeping the shutter speed fixed to a specific duration and adjusting the aperture in changing light levels.
With longer exposures, this mode is often chosen as an effect to create predictable motion blur. When photographing sports or high-speed phenomena, shutter priority with short exposures can ensure that the motion is effectively frozen in the resulting image.
Shutter priority is often abbreviated with Tv (literally, "time value") or S on a camera mode dial.
With longer exposures, this mode is often chosen as an effect to create predictable motion blur. When photographing sports or high-speed phenomena, shutter priority with short exposures can ensure that the motion is effectively frozen in the resulting image.
Shutter priority is often abbreviated with Tv (literally, "time value") or S on a camera mode dial.
See also
exposure is the total amount of light allowed to fall on the photographic medium (photographic film or image sensor) during the process of taking a photograph. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance.
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shutter speed is the length of time a shutter is open; the total exposure is proportional to this exposure time, or duration of light reaching the film or image sensor.
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In optics, an aperture is a hole or an opening through which light is admitted. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane.
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mode dial or camera dial is a dial used on digital cameras to change the camera's mode. Most digital cameras, especially dSLR and SLR-like cameras, employ a mode dial. On point-and-shoot cameras which employ these dials, the mode dials generally offer a range of scene types.
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Aperture priority, often abbreviated Av or A on a camera dial, is a setting on some cameras that allows the user to choose an aperture while the camera selects a shutter speed to match. The camera will ensure proper exposure.
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