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Basic Photography Terms
Exposure
Exposure refers to the amount of light that strikes the film when a picture
is taken. Applying the right amount of light for the sensitivity of the film is
called proper exposure, The proper exposure can be controlled by
adjusting the shutter speed and the aperture.
Shutter Speed
The camera's shutter mechanism controls how much light reaches the film
by adjusting how long the shutter is open. This time is called the shutter
speed.
Your camera shows the shutter speed in the LCD panel and in the
viewfinder. The range is from 1/2000 second (2000) to 30 seconds (30"),
and includes the bulb setting (B) in which the shutter stays open as long
as you hold down the shutter button,
Aperture
The aperture built into the camera lens is an
opening that can be made larger or smaller
to control how much light strikes the film.
The number that represents the size of this
opening is called the aperture setting.
Your camera shows the aperture setting in
the LCD panel and in the viewfinder.
Depending on the particular lens you are
using with your camera, the range is from
1.0 to 64.
Film Speed (ISO Sensitivity)
The film speed (or "sensitivity") indicates how much light is required to
expose the film. The numerical value is determined by the International
Standards Organization (ISO). The greater the film speed, the more
sensitive the film is to light. Higher ISO values mean that less light is
required to shoot pictures, so that shots can be taken in darker locations.
Your camera shows the film speed in the LCD panel. The range is from 6
to 8000.
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