141Technical Notes / Appendix
Flash Control ( 42, 120)
The following types of fl ash control are supported when a CPU lens is sued in combination
with the built-in fl ash or optional SB-800 or SB-600 Speedlights.
• i-TTL Balanced Fill-Flash for Digital SLR: Flash output is adjusted for a natural balance between
the main subject and the background.
• Standard i-TTL Fill-Flash for Digital SLR: Flash output is adjusted for the main subject; the bright-
ness of the background is not taken into account. Recommended for shots in which the
main subject is emphasized at the expense of background details, or when exposure com-
pensation is used.
Standard i-TTL fl ash control is used with spot metering or when selected with the optional
Speedlight. i-TTL balanced fi ll-fl ash for digital SLR is used in all other cases.
Shutter Speeds Available with the Built-in Flash
The following shutter speeds are available when the built-in fl ash is used.
Mode Shutter speed Mode Shutter speed
, , P
*
, A
*
/–/ s /–1 s
/–/ s S, M /–/ s
* Slowest shutter speed at which fl ash will be used can be selected using Custom Setting 24 (Flash
shutter speed). Flash will still fi re at shutter speeds as slow as 30 s when set to slow sync.
Aperture, Sensitivity, and Flash Range
Flash range varies with sensitivity (ISO equivalency) and aperture.
Aperture at ISO equivalent of Range
100 125 160 200 250 320 400 500 640 800 1000 1200 1600 m ft.
1.4 1.6 1.8 2 2.2 2.5 2.8 3.2 3.5 4 4.5 5 5.6 1.0–9.2 3 ft. 3 in.–30 ft. 2in.
2 2.2 2.5 2.8 3.2 3.5 4 4.5 5 5.6 6.3 7.1 8 0.7–6.5 2 ft. 4 in.–21 ft. 4in.
2.8 3.2 3.5 4 4.5 5 5.6 6.3 7.1 8 9 10 11 0.6–4.6 2 ft.–15 ft. 1in.
4 4.5 5 5.6 6.3 7.1 8 9 10 11 13 14 16 0.6–3.2 2 ft.–10 ft. 6in.
5.6 6.3 7.1 8 9 10 11 13 14 16 18 20 22 0.6–2.3 2 ft.–7 ft. 7in.
7910 11 13 14 16 18 20 22 25 29 32 0.6–1.6 2 ft.–5 ft. 3in.
11 13 14 16 18 20 22 25 29 32 — — — 0.6–1.1 2 ft.–3 ft. 7in.
16 18 20 22 25 29 32 — — — — — — 0.6–0.8 2 ft.–2 ft. 7in.
In the following modes, the maximum aperture (minimum f/-number) is limited according
to ISO sensitivity when the built-in fl ash is used:
Mode
Maximum aperture at ISO sensitivity of
100 125 160 200 250 320 400 500 640 800 1000 1250 1600
P, , , 4 4.2 4.5 4.8 5 5.3 5.6 6 6.3 6.7 7.1 7.6 8
5.6 6 6.3 6.7 7.1 7.6 8 8.5 9 9.5 10 11 11
For each one-step increase in sensitivity (e.g., from 200 to 400), aperture is stopped down by
half an f/-stop. If the maximum aperture of the lens is smaller than given above, the maxi-
mum value for aperture will be the maximum aperture of the lens.
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