Nikon fe2 - Manual (Page 31)

CONTROLS DETAIL
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How to read the EV chart
Section A of the chart shows the usable EV range depending
on the lens’ maximum aperture in full-aperture metering, while
it also indicates the usable EV range for aperture settings in
stop-down metering. Section D shows the value for the ASA/ISO
film speeds, Section B the aperture settings for various film
speeds, and Section C the shutter speeds. In practice, you will
find that it is generally the high end and the low end of the meter­
ing range which require a careful check. The EV range of the
Nikon FE2 encompasses most lighting situations, and it is only
under very dim or very bright picture-taking situations that you
need pay any special attention.
■ Full-aperture metering
Use the Nikkor 50 mm f/1.4 lens and a film speed of ASA/ISO
100 as an example. By referring to the f/1.4 column in Section
A and the EV value indicated for ASA/ISO 100 in Section D, you
will find that the FE2’s EV range in this case is 1 to 18.
If the lens is set at f/5.6, refer to Section B and single out the
f/5.6 indication for ASA/ISO 100. Go diagonally down until the
protruding line intersects with Section C’s vertical line for a
shutter speed of 8 sec. (the FE2’s slowest shutter speed). From
this point of intersection, follow the horizontal line that leads to
Section D’s EV value for ASA/ISO 100, and you will obtain an
EV value of 2. Start again from the f/5.6 indication for ASA/ISO
100 in Section B, and go down diagonally until the protruding
line intersects with Section C's vertical line for a shutter speed
of 1/4000 sec. (the FE2’s fastest shutter speed) this time. Then
follow the horizontal line that leads to Section D’s EV value for
ASA/ISO 100, and you will get a reading of EV 17. This means
that at an f/stop of f/5.6 at ASA/ISO 100 and at shutter speeds
from 8 to 1/4000 sec., the effective metering range is EV 2 to
17, which is well within the FE2’s metering range of EV 1 to
EV18.
■ Stop-down metering
For stop-down metering, Section A indicates the usable EV
range for various aperture settings. For example, if the lens is
stopped down to f/8 at ASA/ISO 100, refer to the f/8 column in
Section A and the EV values indicated for ASA/ISO 100 in Sec­
tion D, and you will find that the EV range for f/8 is EV 6 to 23.
Now single out f/8 at ASA/ISO 100 in Section B. 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 inter­
section, follow the horizontal line that leads to Section D’s
EV value for ASA/ISO 100, and you will obtain an EV reading of
3. This means that an f/stop of f/8 at ASA/ISO 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/ISO 100 in Section B diagonally down until
it intersects the horizontal line in Section C that leads to Section
D’s EV value of 3 for ASA/ISO 100, and you will find that the
slowest shutter speed usable Is 1 sec. In other words, at f/8 at
ASA/ISO 100, the available shutter speed range is from 1 to
1/4000 sec., which has an effective EV range from EV 6 to 18
(indicated by the broken line in Section C)—well within the
metering range.
These EV charts indicate the performance of the FE2 under
normal temperatures and give the usable ranges for all shutter
speed/film speed combinations.
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