How is Shutter Speed Measured?

Measuring shutter speed is very easy to do. It is the amount of time that the shutter on your camera is open, recorded in a fraction of a second. For example, if you have a shutter speed of 1000, then the shutter will open for 1/1000th of a second. Generally, shutter speeds are categorized into fast, slow and long shutter speeds.        

Fast Shutter Speeds

A shutter speed is considered fast when it is above 500, or open for 1/500th of a second. The purpose of a shutter speed this fast is to capture movement without it coming out blurry.  

Slow Shutter Speeds

Shutter speeds that are considered slow are ones that are slower than 1/60th of a second. It is at these speeds that an average person will not be able to hold the camera still for long enough to get a decent picture. Slow shutter speeds should not be used without some sort of stabilization for your camera.

Remember that, generally, the shutter speed that you can use is based on the lens that you have in your camera. A 200 mm lens should not use anything faster than a shutter speed of 200, or 1/200th of a second. 

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