Nikon SB-27 instruction manual If the ready-light blinks after shooting

If the ready-light blinks after shooting

The ready-lights in the SB-27 and the camera blink for approx. 3 seconds after shooting to signal that the flash has fired at full output but the light may have been insufficient.

TTL		f t	m
	M mm	60	18
		30	9
A ZOOM		15	4
M ISO		7	2
		4	1
		2	0.6

—When using the SB-27 with cameras in

Group I, the underexposure indicator ÷ blinks in the SB-27's LCD panel and the amount of underexposure is indicated.

Reshooting

•Reconfirm flash-to-subject distance and flash shooting distance range when shooting in programmed auto (P) or shutter-priority auto

(S)exposure mode, or choose aperture-priority auto (A) or manual

(M)exposure mode. Select an aperture that will allow you to bring the subject within flash shooting distance range.

Flash shooting distance range in 1/300 TTL High-Speed Sync Flash operation (F5 only)

Flash shooting distance range (far side) cannot be read from the indicator bars on the SB-27 in AUTO flash mode.

In such a case, use the following “Guide number” table and equation for calculating the shooting distance according to each zoom-head position.

Guide number (at ISO 100 for m/ft)

Zoom head position	24mm	28mm	35mm	50mm
Guide number	11/36	12/39	14/46	16/52

D (flash shooting distance) =

Guide number

f/stop (aperture)

For example, when shooting with ISO 100 film, at a 35mm zoom-head position and an aperture of f/5.6:

D=14/5.6 = 2.5 (far side) [measured in meters]

You can read a shooting distance (near side) of 0.6m from the SB-27’s indicator bars. Therefore, the flash shooting distance ranges from 0.6m to 2.5m.

For films other than ISO 100, multiply the figures in the table above by the factors shown below.

ISO film speed	25	50	200	400	800
Factor	x0.5	x0.71	x1.4	x2	x2.8

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