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EVChart
At ASAIISO 100, the exposure
range
of
the
Nikonos-V
is
from EV 8 (1/30sec
.
at f/2.8)
to
EV 19 (1I1000sec.
at
f/22)
.
The ranges
at various
film
speeds
are
shown
in
the
chart.
For example,
the
range at ASA/ISO 100
is
in
pink,
the range
at
ASA/ISO 25 is indicated
by
blue lines,
and the range at ASA/ISO 400 is indicated
EV
by
black lines. The exposure value (EV) is a number
representing the
various
combinations of
apertures
and
shutter
speeds
that
will provide the
same
expo-
sure.
For instance, EV 10 represents 1/30sec
.
at
f/5 .6,
but it can also mean 1/60sec. at
f/4
or
1/125sec.
at
f/2.8.
ASAIISO
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18
19
20 21
25
50
100
200
400
800
1600
. /
/
/
. /
/"
/""
/
/
/ /
/"
/" /"
/
/
/"" /"
V
/" /"
/"
8 4/5 (
8/
1
( 1 (
22'
2.
f/ number
V
/
/"
/
/"
I
I
I
I
I
I
~
/""
/"
V
V
/"
~
'"
/
/
. /
JIII'
A'
/
/
/
"
/"
V /"" /""
",
/
/
V
. / /"
V
V
/
I
ASA
/I
SO 25
ASA /ISO
100
I
ASA
/ISO 400
~
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U","bl
e
"~
range on
Auto
.
Time
(sec.)
1/1000
1/
500
1/250
1/
125
1/60
1/
30
1/
15
1/8
1/
4
1/2
1
2
57
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