Nikon FM3A Instruction Manual page 51

E
EV
EV stands for Exposure Value, which indicates the exposure settings, For example:
using ISO 100 film with a shutter speed of one second and an aperture setting of f/1.0,
the EV is defined as 0 (EV 0). This value increases by one each time the aperture is
stopped down or the shutter speed is increased by one unit. The aperture and shutter
speed are indicated in the built-in exposure meter of the camera as values converted
from the EV.
Exposure
Exposing the film to light with a combination of the aperture and shutter speed settings.
The aperture is used to adjust the amount of light that reaches the film, and the shutter
speed is used to adjust the length of time the film is exposed, thus providing the correct
exposure.
Exposure compensation
To change the standard exposure determined by an exposure-meter. By intentionally
changing the exposure setting, you may obtain a desired effect. Increasing the expo-
sure is called positive compensation, and decreasing it is called negative compensa-
tion. Exposure compensation may be effective when the luminance, reflection, posi-
tion, or size of the subject may cause an exposure error.
F
Flash-exposure compensation
The light-control system that automatically controls the illumination level of the flash
according to the ambient brightness is called flash exposure. Flash-exposure compen-
sation is a function to increase/decrease this automatic-level-control range.
Flash-shooting distance range
The range in which the proper exposure can be obtained in flash photography. The
higher the film sensitivity, the wider the range, and vice versa. The wider the lens aper-
ture, the wider the range, and vice versa. Pictures must be taken within the flash shoot-
ing distance range.
Full aperture
The minimum aperture value (smallest f-number) for a lens is "full aperture." With the
full aperture opening, the depth of field is shallow, and images are defocused more in
the background while widening the shootable range for the amount of light.
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