Nikon F3 - Manual (Page 47)

■ Stop-down metering
Example: ASA film speed 100
Stopped-down aperture f/8
The procedure is the same. The f/8 column in Section A
and the EV values indicated for ASA 100 in Section D will
show you that the EV range for f/8 is 6 to 23. Refer now to
Section B and single out f/8 at ASA 100. Go diagonally
down until the protruding line intersects with Section C's
vertical line for the shutter speed of 8 sec. From this point
of intersection, follow the horizontal line that leads to
Section D's EV value for ASA 100, and you will obtain an
EV reading of 3. This means that an f/stop of f/8 at ASA
100 and a shutter speed of 8 sec. give an EV value outside
the metering range. To find out the slowest shutter speed
usable, follow the f/8 indication for ASA 100 in Section B
diagonally down until it intersects the horizontal line in
Section C that leads to Section D's EV value of 6 for ASA
100, and you will find that the slowest shutter speed
usable is 1 sec. In other words, at f/8 and ASA 100, the
available shutter speed range that is within the metering
range is from 1 to 1/2000 sec., which has an effective EV
range of 6 to 17 (indicated by the broken line in Section
C)—well within the metering range.
In practice, you will find that it is generally the high end
and the low end which reguire a careful check. The EV
range of the Nikon F3 encompasses most lighting situ­
ations, and it is only under dim-light or extra-bright
picture-taking situations that you need pay any special
attention.
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