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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/lSO
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.
I
Full
-aperture
metering
Use
the Nikkor 50mm
f/1.4 lens
and a
film speed of ASA/lSO
100 as an example.
By referring to the f/.1.4 column
in
Section
A and the EV value
indicated for ASA/lSO 1OO
in
Section D,
you
will f
ind
that
the FE2's EV
range in
this case
is 1 to
"lB.
lf the lens is
set
at
f/5.6, refer
to Section
B and
single
out the
f/5.6 indication for
ASA/lSO 1OO.
Go diagonally down
until the
protruding
line
intersects with Section C's vertical line
for a
shulter speed
of B
sec.
(tne
FEz'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
f rom the f/5.6 indication for
ASA/lSO
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 horrzontal 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/lSO 100 and at shutter speeds
3O
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
EV 18.
I
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/B
at ASA/lSO
100, refer to the f/B column
in
Section
A and the EVvalues indicated for ASA/lSO 100 in Sec-
tion D, and
you
will find that the EV
range
for
f/B is
EV 6
to 23.
Now single out
f/B
at
ASA/lSO 100 in
Section
B.
Go diagonally
down until
the
protruding
line intersects with
Section
C's
vertical
line for the
shutter speed
of
B sec.
From this
point
of
inter-
section,
follow the horizontal line that
leads to
Section
D's
EV
value for ASA/lSO 100, and
you
will obtain an EV
reading
of
3.
This
means that
an
f/stop of f/8 at ASA/lSO
'100
and a shutter
speed of B sec.
give
an
EV value outside the
metering range.
To find
out the slowest shutter speed
usable, follow the f/B
indication for ASA/lSO 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/B
at
ASA/lSO
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
oerformance
of the FE2 under
normal temperatures and
give
the usable
ranges for
all shutter
speed/f
i lm
speed
combinations.
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