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Technical Notes—Appendix
Fine-Tuning and Color Temperature
Approximate color-temperatures for settings other than A (auto) are given below
(values may diff er from color temperatures given by pho to color meters):
Incandescent Fluorescent
*
Direct
sunlight Flash
Cloudy
(daylight)
Shade
(daylight)
+3 2,700 K 2,700 K 4,800 K 4,800 K 5,400 K 6,700 K
+2 2,800 K 3,000 K 4,900 K 5,000 K 5,600 K 7,100 K
+1 2,900 K 3,700 K 5,000 K 5,200 K 5,800 K 7,500 K
±0 3,000 K 4,200 K 5,200 K 5,400 K 6,000 K 8,000 K
–1 3,100 K 5,000 K 5,300 K 5,600 K 6,200 K 8,400 K
–2 3,200 K 6,500 K 5,400 K 5,800 K 6,400 K 8,800 K
–3 3,300 K 7,200 K 5,600 K 6,000 K 6,600 K 9,200 K
* The size of the increments for Fluorescent refl ects the wide variations in color tem per a-
ture among the many diff erent types of fl uorescent light source, ranging from low-tem-
per a ture sta di um lighting to high-temperature mer cu ry-vapor lamps.
Flash Range, Aperture, and Sensitivity
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 1250 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 1.0–7.5 3.3–24.6
2 2.2 2.5 2.8 3.2 3.5 4 4.5 5 5.6 6.3 7.1 8 0.7–5.4 2.3–17.7
2.8 3.2 3.5 4 4.5 5 5.6 6.3 7.1 8 9 10 11 0.6–3.8 2.0–12.5
4 4.5 5 5.6 6.3 7.1 8 9 10 11 13 14 16 0.6–2.7 2.0–8.9
5.6 6.3 7.1 8 9 10 11 13 14 16 18 20 22 0.6–1.9 2.0–6.2
8910 11 13 14 16 18 20 22 25 29 32 0.6–1.4 2.0–4.6
11 13 14 16 18 20 22 25 29 32 — — — 0.6–0.9 2.0–2.9
16 18 20 22 25 29 32 ——————0.6–0.7 2.0–2.3
In programmed auto, the maximum aperture (minimum f/-number) is lim it ed
ac cord ing to sen si tiv i ty (ISO equivalency), as shown below:
Maximum aperture at ISO equivalent of:
100 125 160 200 250 320 400 500 640 800 1000 1250 1600
2.8 3 3.2 3.3 3.5 3.8 4 4.2 4.5 4.8 5 5.3 5.6
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 maximum value for aperture will be the maximum aper-
ture of the lens.