Shutter speed. Is the speed of opening - the aperture that serves to open and block light to the film is not the shutter. Open the back cover off the camera (like the film) and try to see the photos. The thin sheet. Move up and down so quickly that I did not catch. The moving up and down to open the shutter blocking the light. Short period of time. In the open - close it. So that the shutter speed or in a Speed Camera is understood to mean. In light of the turn-off to a slow shutter speed from Speed. For example, let light into the camera for a second, half a second or ½ second half of a half-second or ¼ second, 1 / 8 seconds -> to 1 / 500 sec, 1 / 1000 sec, 1 / 2000 sec, 1 /. 4000 seconds and a maximum in the 1 / 8000 seconds, or understand it, if we divide the interval 1 second into 8000 the speed of this device is only a fraction of 1 in 8000 and is fast enough to stop a bullet fired from. That gun was not visible to our eyes (if we can see if someone would shoot him up in it), how to write this fraction was dizzy, so I rewrite it easy to understand. And using a few are 1, 2, 4, 8, 15, 30, 60, 125, 250, 500, 1000, 2000, 4000, 8000 and B (as long as we want), so when I saw a lot more do not. understand that the more slowly. The number stands for a fraction of a second version can be opened as soon as possible, up to 30 seconds to 1 / 8000 second, usually between 1000-2000 seconds, fast enough for normal shooting.
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