407
n
Exposure Program
The exposure program for programmed auto is shown in the
following graph:
The maximum and minimum values for EV vary with ISO
sensitivity; the above graph assumes an ISO sensitivity of ISO 200
equivalent.
When matrix metering is used, values over 17
1
/3 EV
are reduced to 17
1
/3 EV.
-4
-3
12
13
-2
-1
0
1
2
3
4
5
6
7
8
9
10
11
f/1.4
f/1
f/2
f/2.8
f/4
f/5.6
f/8
f/11
f/16
f/22
f/32
30" 15"
8"
4" 2" 1" 2 4 8 15 30 60
125 250 500
1000
2000 4000
8000
22
21
20
19
18
17
16
15
14
[
EV
]
23
17
1
/
3
f/1.4 − f/16
ISO 200; lens with maximum aperture of f/1.4 and minimum
aperture of f/16 (e.g., AF 50mm f/1.4 D)
Shutter speed
Aperture
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