Nikon SB-27 instruction manual Specifications, Vertical

Specifications

Electronic construction	Automatic Insulated Gate Bipolar Transistor (IGBT)
	and series circuitry.
Angle of coverage	Horizontal position
		Angle of coverage
						Vertical	Horizontal
		Covering the picture angle of 24mm lens			60°		78°
		Covering the picture angle of 28mm lens			53°		70°
		Covering the picture angle of 35mm lens			46°		60°
		Covering the picture angle of 50mm lens			36°		46°
	Vertical position
		Angle of coverage
						Vertical	Horizontal
		Covering the picture angle of 35mm lens			78°		60°
		Covering the picture angle of 50mm lens			60°		46°
		Covering the picture angle of 70mm lens			46°		36°
Guide number						(at 20˚C/68˚F)
(at ISO 100: for m/ft)
		Light		Zoom-head position
		Output	24mm	28mm		35mm	50mm
				(normal)
		1/1 (full)	25/82	27/89		30/98	34/112
		1/2	17.7/58	19/62		21.2/69	24/79
		1/4	12.5/41	13.5/44		15/49	17/56
		1/8	8.8/29	9.5/31		10.5/34	12/39
		1/16	6.2/20	6.7/22		7.4/24	8.5/28
	For Guide numbers for 1/300 TTL High-Speed Sync
	Flash in AUTO flash mode (F5 camera only), see page 40.
Flash head	The flash head rotates from the horizontal to the
	vertical position along a 180° arc.
Flash mode selector	OFF / M / AUTO
	• Power turns ON when set to "M" or "AUTO" position.
	• Standby function works when set to "M" or "AUTO"
		position (set camera setting switch to K); power
		automatically turns OFF after approx. 80 seconds
		when both SB-27 and camera are not in use.

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