Nikon F3 - Manual (Page 46)

EV RANGE OF THE CAMERA
How to read the EV chart
■ Full-aperture metering
Example: Lens maximum aperture f/1.4
ASA film speed 100
Working aperture f/5.6
By referring to the f/1.4 column in Section A and the EV
values indicated for ASA 100 in Section D, you will find
that the EV range for an f/1.4 lens at ASA 100 is 1 to 18.
Now, refer to Section B and single out the f/5.6 indication
for ASA 100. Go diagonally down until the protruding
line intersects with Section C's vertical line for the shutter
speed of 8 sec. (the F3's slowest shutter speed). 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 value of 2. Start again from the f/5.6 indication for
ASA 100 in Section B, and go down diagonally until the
protruding line intersects with Section C's vertical line
for the shutter speed of 1/2000 sec. (the F3's fastest shutter
speed) this time. Then follow the horizontal line that leads
to Section D's EV value for ASA 100, and you will get a
reading of EV 16. This means that an f/stop of f/5.6 at ASA
100 and a shutter speed of from 8 to 1/2000 sec. has an
effective EV range of 2 to 16, which is well within the F3's
metering range of EV 1 to EV 18. The area encompassed
by the heavy lines in Section C demonstrates a metering
range for full aperture method using an f/1.4 lens and
ASA 100 film.