My dad just gave me one of his basic Canon cameras and I'm learning about all of the different things you can toggle with in the manual modes. So far, I have learned about shutter speed, aperture, and ISO. My dad says that not knowing about these things will limit the creativeness you can achieve with your shots, and will also hinder your general knowledge of how the camera works. The shutter speed, as described by wikipedia is a common term used to discuss exposure time, the effective length of time a shutter is open; the total exposure is proportional to this exposure time, or duration of light reaching the film or image sensor. The aperture deals with how much light is let into the lens, much like your pupils. The ISO is very similar to the aperture in that it deals with amounts of light, but it is more specifically used for how sensitive you want the camera to be to light. For example, if you are photographing a dark area, you want to let in as much light as possible. To do this, you would widen your aperture and increase the ISO.
For the most part, all of these terms are pretty Greek to me. But hopefully I will be able to grasp their definitions more clearly and use their functions more effectively.
More to come,
Will
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