Aperture (f-stop) = how big the hole is that lets light in
Controls Depth of Field (DoF)
The bigger the hole, the smaller the f number(f/5.6, f/4.0, f/2.8), the shallower the depth of field (less in focus from foreground to background from point of focus). The smaller the hole, the bigger the number (f/16, f/22) the more will be in focus from foreground to background from the point of focus. The below shot was taken at f/1.4
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Shutter Speed = how long the shutter is open to let light in
Controls Motion
The longer the shutter is open (1/60, 1/30, 1/15), the more motion blur you will get. Conversely, the faster it is the more you will be able to stop motion (1/125, 1/250, 1/500) The below was shot at 1/3 sec. with a flash exposure to stop some of the motion. This is called Tungsten Blur. (More on that later.)
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Here is a simple guide to industry standard full stops of exposure for both Aperture and Shutter Speed. Each number represents a "stop" of light exposure. A "stop" means doubling the amount. For example, f/4.0 lets in twice as much light as f/5.6 and a 250th of a second (1/250) lets in half as much light as a 125th (1/125).
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1 comment:
Your tips are very helpful, keep posting.
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