Shutter Speed Factor
Shutter speed in photography means the length of time a shutter is open or duration of light fill the film. By setting the shutter speed, we can make the photograph based on our style. As we explained before in the exposure article, with shutter speed with aperture together decide the exposure value. So, for any given exposure value, a fast shutter speed requires a larger aperture (small f number). And a slow shutter speed, longer length of time needed, can be compensated by a smaller aperture.
Camera shutters comprise of one or two setting for making the exposure.
– B (for Bulb) means to keep the shutter open as long as the shutter release is held.
– T (for Time) means the shutter will open according to the speed setting we set (ex: 1/4000″)
With shutter speed we can control the amount of light fill the film. We can create dramatic photograph by setting this value.
Lower shutter speed can make the blur effect when the object is moving. In example, I made the white waterfall become white cotton by setting the shutter speed to 2”.
Faster shutter speed can make the moving object become freeze. In example, I can freeze the fast the “niagara glider” and the water by setting the shutter to 1/1000”.
We also can make a panning picture. Panning picture is a picture of moving object which is sharp in the object but blur in the background. In example, I use 1/40” for the panning picture of a little biker in a race.