Shutter priority

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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.

[edit] See also

• Mode dial
• Aperture priority