Nikon f2 - Manual (Page 34)

EXPOSURE MEASUREMENT
The exposure meter of the Nikon F2SB Photomic
camera’s finder features a center-weighted TTL metering
system coupled to the shutter speed and aperture con­
trols. The meter reads the light over the entire focusing
screen but favors the central 12mm-diameter area. This
allows you to make precise readings of the selected sub­
ject area, and results in more balanced overall exposures.
— Underexposureiay more than 1 stop
o -
Underexposure by 1/5 to 1 stop
o
Correct exposure
+ o
Overexposure by 1/5 to 1 stop
+
Overexposure by more than 1 stop
Determining Exposure
The finder has three LED exposure indicators visible
within the viewfield (“+” for overexposure, “o” for
correct exposure, and ” for underexposure); thus, the
metering system is capable of providing easy-to-read ex­
posure information in five steps, and even at extremely
low-light levels. Additionally, the selected shutter speed
and lens aperture settings are visible for maximum ease
of operation for setting the desired exposure.
To determine the correct exposure with the Nikon F2SB:
Switch ON the meter by moving the film-advance lever
to the 20 standoff position; with this action, one of the
LED indicators will light, indicating overexposure, cor­
rect exposure or underexposure. If the plus (+) indicator
lights, increase the shutter speed or decrease the aperture
until the center (o) indicator just comes on and the {+)
turns off; if the minus (—) indicator is lit, decrease the
shutter speed or increase the aperture until the center in­
dicator lights. When two LEDs light simultaneously (i.e.,
+ and o, or — and o), the exposure setting is within 1-stop
of correct exposure; thus, be sure to adjust the aperture
setting slowly to get only the correct “center” (°) ex­
posure. Values for the five settings of the LEDs are
described in the figure on this page.
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