Specifications - Nikon SB-28 Instruction Manual

Specifications

Electronic
construction
Guide number
Angle of
coverage
Automatic Insulated Gate Bipolar Transistor (IGBT) and
series circuitry.
Flash
output
18mm 20mm
level
1/1 (full) 18/59 20/66
1/2 12.7/42 14/46
1/4 9/30 10/33
1/8
6.4/21 7/23
1/16 4.5/15 5/16
1/32
3.2/10 3.5/11
1/64 2.3/8 2.5/8
• See page 51 for details on guide numbers in FP High-
Speed Sync Flash and see also page 30 for details on
guide numbers in 1/300 TTL High-Speed Sync Flash.
(Variable in 6 steps, plus 2-steps with built-in wide flash
adapter)
Flash head in horizontal/front position
Zoom-head position
18mm (with built-in
wide flash adapter in
place)
20mm (with built-in
wide flash adapter
in place)
24mm
28mm
35mm
50mm
70mm
85mm
Zoom-head position
24mm 28mm 35mm 50mm 70mm 85mm
30/98 32/105 36/118 42/138 48/157 50/164
21/69 22.5/74 25.5/84 30/98
15/49 16/53 18/59
10.5/35 11.3/37 12.7/42 15/49
7.5/25 8/26 9/30
5.3/17 5.7/19 6.4/21 7.5/25 8.5/28 9/30
3.8/13 4/13 4.5/15 5.3/17 6.0/20 6.3/21
Angle of coverage
Vertical
90°
85°
60°
53°
45°
34°
26°
23°
(ISO 100, m/ft)
34/112 36/118
21/69 24/79 25/82
17/56 18/59
10.5/35 12/39 12.7/42
Horizontal
102°
98°
78°
70°
60°
46°
36°
31°
91