- CANON EOS CANON CAMERA INSTRUCTIONS

89
Reference
Basic Photography Terms
AE
Abbreviation for auto exposure. It is an automatic metering and exposure
system that sets the optimum exposure (shutter speed and/or aperture
value) based on the reading by the built-in exposure meter.
Exposure
Exposure occurs when the film is exposed to light. Correct exposure is
obtained when the film is exposed to a proper amount of light in
accordance with the film’s sensitivity to light. The correct exposure is
adjusted with the camera’s shutter speed and aperture.
Shutter speed
The shutter speed is the length of time the camera’s shutter opens to
expose the film to the light coming through the lens. The camera displays
the shutter speed from “D” (1/4000 sec.) to “K” (30 sec.) and
“y”.
Aperture value
The aperture setting (f-number) indicates
the size of the aperture opening in the
lens. It is used to adjust the amount of light
striking the film. The camera can display
the aperture setting from “X” to “V”. The
actual aperture range displayed depends
on the lens.
ISO film speed
The ISO film speed indicates the film’s sensitivity to light. The higher the
film speed, the more sensitive the film is. Therefore, ISO 400 and higher-
speed films are suited for low-light conditions. The ISO film speed is set
in accordance with standards set by the International Standardization
Organization (ISO). The camera can display the ISO film speed from “U”
to “F”.