In still cameras, the term shutter speed represents the time that the shutter remains open while taking a photograph. Along with the aperture of the lens (also called f-number), it determines the amount of light that reaches the film or sensor. In digital photography shutter speed is the length of time that your image sensor ’sees’ the scene you’re attempting to capture. In analogue photography it is the length of time the film is exposed.
If you want to freeze your object and to make it look sharp, you will need to assess its speed. The faster your object moves, the faster you need to set your shutter speed. If your object is moving toward/away from you, its speed has less effect than if it is moving from side to sides.
While if the requirement is to produce the impact of ongoing motion such as light trails of traffic or the silky smooth effect of falling water, it is useful to use longer exposure resulting in slow shutter speeds. Under slow shutter speeds one must be careful to eliminate the risk of shake or vibration on the camera that will make the image blurry and distracting. A stable grip or a tripod can assist in producing clear images under low shutter speed.
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| Waterfall captured under slow shutterspeed |
Slow shutter speed will capture more light thereby making the photograph over exposed. Therefore it must always be matched with the right aperture setting to balance the image. Same is the case of fast shutter speed wherein images tend to be underexposed if there is lack of proper light to illuminate the object. An optimum balance between ISO, Aperture and shutter speed will ensure the perfect image. This relationship between ISO, Shutter speed and Aperture is called the exposure triangle.
Imagine your camera is like a window with shutters that open and close. Aperture is the size of the window. If it’s bigger more light gets through and the room is brighter. Shutter Speed is the amount of time that the shutters of the window are open. The longer you leave them open the more that comes in. And a imagine a person inside the room and is wearing sunglasses. Eyes become desensitized to the light that comes in (it’s like a low ISO).
~ Hari Bhagirath Photography
~ Hari Bhagirath Photography
This is great!
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