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Aperture, Sensitivity, and Flash
Ran~
Flash range varies with sensitivity (ISO equivalency) and aperture.
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Aperture at ISO equivalent of
Range
········2····0····0
,........
400
800
1600
3200
....m·_·
r·
~-..ft.....-
....
..
.~.
1.4
2
2.8
4
5.6
1.0-8.5! 3ft. 3 in.-27ft. 11 in.
..................................,
,
,
,
i. .
2
2.8
4
5.6
8
0.7-6.1
2ft.4in.-20ft.
......
~
,
" . . .
···················:··c..
...
2.8
4
5.6
8
11
0.6-4.2
2ft.-13 ft. 9in.
4
5.6
8
11
16
0.6-3.0
··2ft.~9ft:l0in:
5.6
8
11
16
22
0.6-2.1
2 ft.-6ft. 11in.
8
11
16
22
32
0.6-1.5
:2ft.~4ft.
11 in.
11
16
22
32
0.6-1.1
2ft.-3fi.7in.
16
22
32
0.6-0.8
,.
ift.-2fi.7in.
In the following modes, the maximum aperture (minimum f-number) is limited
according to ISO sensitivity when the built-in flash is used:
....................... ·········Maximum aperture
atiSOsensi"ilvlty
of
200
400
800
1600
3200
P,
2.8
3.3
4
4.8
5.6
~
5.6
6.7
8
9.5
11
For each one-step increase in sensitivity (e.g., from 200 to 400), aperture is stopped
down by half an fi-stop. If the maximum aperture of the lens is smaller than given
above, the maximum value for aperture will be the maximum aperture of the lens.
266
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