Shutter speed:It is the length of time a shutter is open; the total exposure is proportional to the duration of light reaching the sensor. There are three factors that affect the shutter speed: the scene luminance, the ISO sensitivity and the aperture size.
You can trade off shutter speed and aperture by using units of stops. A stop up and down on each will halve or double the amount of light regulated by each. For any given total exposure, or exposure value, a fast shutter speed requires a larger aperture (smaller f-number). Similarly, a slow shutter speed, a longer length of time, can be compensated by a smaller aperture (larger f-number).
Shutter speed is measured in seconds.
The typical shutter speeds of most cameras Fast 1/4000 1/3200 1/2500 1/2000 1/1600 1/1250 1/000 1/800 1/640 1/500 1/400 1/320 1/250 1/200 1/160 1/125 1/100 Medium 1/80 1/60 1/50 1/40 1/30 1/25 1/20 1/15 1/13 1/10 1/8 1/69 15 1/4 Slow 0.3" 0.4" 0.6" 0.8" Very slow 1 1.3 1,6 2 2.5 3.2 4 5 6 8 10 13 15 20 25 30 |
In sunlight the typical shutter speed is between 1/100th and 1/125th of a second.
Shutter speed changes the way movement appears in the picture.
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| Very short shutter speeds are used to freeze fast-moving subjects, for example at sporting events. | Very long shutter speeds are used to intentionally blur a moving subject for artistic effect. |
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In low light conditions a slow shutter speed must be used. This extends the time until the shutter closes and provides more light to the sensor.
AssignmentFor your assignment, you are to have two images showcasing a good use of slow shutter speed (1/8th or slower), and two images that use a fast shutter speed (1/250th or faster). Not only should images use various shutter speeds, but they should also demonstrate the use of speed. This assignment requires a total of four images. All images must be taken between April 9th and April 15th. For this assignment, images can be taken in familiar settings (home, work), however, creativity is a must. Photos should include more than the technical requirements, they should also show interesting subject matter and taste. For example, feel free to use a high shutter speed to capture a drop of water from your faucet, but find a creative angle and take on how to do it.
Examples of slow shutter speed:


Examples of fast shutter speed:
