Nikon autofocus speedlight SB-900 User Manual page 136

Specifications
Guide number table (with Auto FP High-Speed Sync)
■
Standard illumination pattern, at ISO 100; m/ft (in FX-format)
Flash
14mm
output
WP +
level
BA
BA
4.7/ 5.8/
1/1
15.4 19
3.3/ 4.1/
1/2
10.8 13.5
2.3/ 2.9/
1/4
7.5 9.5
1.6/ 2/
1/8
5.2 6.6
1.1/ 1.4/
1/16
3.6 4.6
0.8/ 1/
1/32
2.6 3.3
0.5/ 0.7/
1/64
1.6 2.3
0.4/ 0.5/
1/128
1.3 1.6
■
Standard illumination pattern, at ISO 100; m/ft (in DX-format)
Flash
10mm
output
WP
level
BA WP
F
+BA
4.7/ 5.8/
1/1
15.4 19
3.3/ 4.1/
1/2
10.8 13.5
2.3/ 2.9/
1/4
7.5 9.5 10.2 13.8 14.8 16.1 17.4 17.7 18.4 20.3 21.3
1.6/ 2/
1/8
5.2 6.6
1.1/ 1.4/
1/16
3.6 4.6
0.8/ 1/
1/32
2.6 3.3
0.5/ 0.7/
1/64
1.6 2.3
0.4/ 0.5/
1/128
1.3 1.6
• Guide numbers in tables above are for when the SB-900 is mounted to the D3 camera and
with 1/500 sec. shutter speed.
• Guide number with Auto FP High-Speed Sync varies depending on the camera's shutter
speed. For example, when the shutter speed is changed from 1/500 sec. to 1/1000 sec., the
guide number decreases 1 EV. The faster the shutter speed, the smaller the guide number.
• BA: With the Nikon Diffusion Dome attached
• WP: With the wide-flash adapter in place
F–20
17 18 20
WP
6.2/ 8/ 8.4/ 8.7/
20.3 26.2 27.6 28.5
4.3/ 5.6/ 5.9/ 6.1/
14.1 18.4 19.4 20
3.1/ 4/ 4.2/ 4.3/
10.2 13.1 13.8 14.1
2.1/ 2.8/ 2.9/ 3/
6.9 9.2 9.5 9.8
1.5/ 2/ 2.1/ 2.1/
4.9 6.6 6.9 6.9
1/ 1.4/ 1.4/ 1.5/
3.3 4.6 4.6 4.9
0.7/ 0.9/ 1/ 1/
2.3 3 3.3 3.3
0.5/ 0.7/ 0.7/ 0.7/
1.6 2.3 2.3 2.3
12 14 16 17
6.2/ 8.4/ 9.1/ 9.8/ 10.6/
20.3 27.6 29.9 32.2 34.8
4.3/ 5.9/ 6.4/ 6.9/ 7.4/
14.1 19.4 21 22.6 24.3
3.1/ 4.2/ 4.5/ 4.9/ 5.3/
2.1/ 2.9/ 3.2/ 3.4/ 3.7/
6.9 9.5 10.5 11.2 12.1 12.5 12.8 14.1 15.1 16.7 19.4 20.7 21.3
1.5/ 2.1/ 2.2/ 2.4/ 2.6/
4.9 6.9 7.2 7.9 8.5
1/ 1.4/ 1.6/ 1.7/ 1.8/
3.3 4.6 5.2 5.6 5.9
0.7/ 1/ 1.1/ 1.2/ 1.3/
2.3 3.3 3.6 3.9 4.3
0.5/ 0.7/ 0.8/ 0.8/ 0.9/
1.6 2.3 2.6 2.6 3
Zoom position (mm)
24 28 35 50
9.8/ 10.9/ 12.4/ 14.6/
32.2 35.8 40.7 47.9
6.9/ 7.7/ 8.7/ 10.3/
22.6 25.3 28.5 33.8
4.9/ 5.4/ 6.2/ 7.3/
16.1 17.7 20.3 24
3.4/ 3.8/ 4.3/ 5.1/
11.2 12.5 14.1 16.7
2.4/ 2.7/ 3.1/ 3.6/
7.9 8.9 10.2 11.8
1.7/ 1.9/ 2.1/ 2.5/
5.6 6.2 6.9 8.2
1.2/ 1.3/ 1.5/ 1.8/
3.9 4.3 4.9 5.9
0.8/ 0.9/ 1/ 1.2/
2.6 3 3.3 3.9
Zoom position (mm)
18 20 24 28 35
10.9/ 11.3/ 12.4/ 13.1/ 14.6/
35.8 37.1 40.7 43 47.9
7.7/ 7.9/ 8.7/ 9.2/ 10.3/
25.3 25.9 28.5 30.2 33.8
5.4/ 5.6/ 6.2/ 6.5/ 7.3/
24
3.8/ 3.9/ 4.3/ 4.6/ 5.1/
2.7/ 2.8/ 3.1/ 3.2/ 3.6/
8.9 9.2 10.2 10.5 11.8 13.8 14.8 15.1 15.7 16.1 16.7 16.7 17.1
1.9/ 1.9/ 2.1/ 2.3/ 2.5/
6.2 6.2 6.9 7.5 8.2
1.3/ 1.4/ 1.5/ 1.6/ 1.8/
4.3 4.6 4.9 5.2 5.9
0.9/ 0.9/ 1/ 1.1/ 1.2/
3 3 3.3 3.6 3.9
70 85 105 120 135 180 200
16.1/ 17.2/ 18.1/ 18.6/ 18.8/
52.8 56.4 59.4 61 61.7
11.3/ 12.1/ 12.7/ 13.1/ 13.2/
37.1 39.7 41.7 43 43.3
8/ 8.6/ 9/ 9.3/ 9.4/
26.2 28.2 29.5 30.5 30.8
5.6/ 6/ 6.3/ 6.5/ 6.6/
18.4 19.7 20.7 21.3 21.7
4/ 4.3/ 4.5/ 4.6/ 4.7/
13.1 14.1 14.8 15.1 15.4
2.8/ 3/ 3.1/ 3.2/ 3.3/
9.2 9.8 10.2 10.5 10.8
2/ 2.1/ 2.2/ 2.3/ 2.3/
6.6 6.9 7.2 7.5
1.4/ 1.5/ 1.5/ 1.6/ 1.6/
4.6 4.9 4.9 5.2
50 70 85 105 120 135 180 200
16.8/ 18.1/ 18.6/ 19.2/ 19.7/
55.1 59.4 61 63 64.6
11.8/ 12.7/ 13.1/ 13.5/ 13.9/
38.7 41.7 43 44.3 45.6
8.4/ 9/ 9.3/ 9.6/ 9.8/ 10.2/ 10.3/ 10.4/
27.6 29.5 30.5 31.5 32.1 33.5 33.8 34.1
5.9/ 6.3/ 6.5/ 6.7/ 6.9/
22 22.6 23.6
4.2/ 4.5/ 4.6/ 4.8/ 4.9/
2.9/ 3.1/ 3.2/ 3.3/ 3.4/
9.5 10.2 10.5 10.8 11.2 11.8 11.8 11.8
2.1/ 2.2/ 2.3/ 2.4/ 2.4/
6.9 7.2 7.5 7.9 7.9
1.4/ 1.5/ 1.6/ 1.6/ 1.7/
4.6 4.9 5.2 5.2 5.6
19.7/ 20.5/
64.6 67.3
13.9/ 14.4/
45.6 47.2
9.8/ 10.2/
32.2 33.5
6.9/ 7.2/
22.6 23.6
4.9/ 5.1/
16.1 16.7
3.4/ 3.6/
11.2 11.8
2.4/ 2.5/
7.5 7.9 8.2
1.7/ 1.8/
5.2 5.6 5.9
20.5/ 20.7/ 20.8/
67.3 67.9 68.2
14.4/ 14.6/ 14.7/
47.2 47.9 48.2
7.2/ 7.3/ 7.3/
24 24
5.1/ 5.1/ 5.2/
3.6/ 3.6/ 3.6/
2.5/ 2.5/ 2.6/
8.2 8.2 8.5
1.8/ 1.8/ 1.8/
5.9 5.9 5.9