Guide numbers in the manual mode – Nikon SPEEDLIGHT SB-16 User Manual

Page 40

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The guide number at various film speeds and zoom head

settings is shown in the following table:

Guide numbers in the manual mode

Unit: m (ft)

Zoom head

setting

ASA/ISO film speed

800

400

200

100

50

25

T

119(390) 84 (276) 59(194) 42(138) 30 (98) 21 (69)

s

107(351) 76 (250) 54(177) 38(125) 27 (89) 19 (62)

N

90 (295) 64(210) 45 (148) 32(105) 22(72) 16 (52)

Wi

76 (250) 54(177) 38(125) 27 (89)

19(62) 13 (43)

Wi*

54(177) 38(125) 27 (89)

19(62)

13 (43) 9.5 (31)

* W?

is used when the wide-flash adapter is attached to the flash unit

with the zoom head set at W i.

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