Specifications, Guide number table, F –18 – Nikon SB-900 User Manual
Page 134: Ti ps on speedlight care and reference information
F–18
F
Ti
ps on Speedlight care and reference information
Specifications
Zoom position (mm)
FX-format
DX-format
Standard
illumination
Center-weighted
illumination
Even illumination
Standard
illumination
Center-weighted
illumination
Even illumination
8
(BA+WP)
–
–
–
–
13
–
8 (BA)
–
–
–
–
16
–
8 (WP)
–
–
–
–
17
–
10 (BA+WP)
–
–
–
13
–
–
10 (BA)
–
–
–
16
–
–
10 (WP)
–
–
–
17
–
–
11 (BA+WP)
–
–
–
–
–
13
11 (BA)
–
–
–
–
–
16
11 (WP)
–
–
–
–
–
17
12 (BA+WP)
–
13
–
–
–
–
12 (BA)
–
16
–
–
–
–
12 (WP)
–
17
–
–
–
–
12
–
–
–
23
26
–
14 (BA+WP)
13
–
–
–
–
–
14 (BA)
16
–
–
–
–
–
14 (WP)
17
–
–
–
–
–
14
–
–
–
25
29
–
16
–
–
–
27
32
22
17 (BA+WP)
–
–
13
–
–
–
17 (BA)
–
–
16
–
–
–
17 (WP)
–
–
17
–
–
–
17
22
25
–
29
33
23
18
23
26
–
30
34
24
20
24
27
–
31
36
25
24
27
32
22
34
40
32
28
30
36
24
36
43
33
35
34
40
31
40
47
37
50
40
46
36
46
51
43
70
44
50.5
41
49.5
53
49
85
47
52
44
51
58
50.5
105
49.5
53
49
52.5
–
51
120
51
56
50
54
–
51.5
135
51.5
58
50.5
56
–
52.5
180
54
–
51.5
56.5
–
53
200
56
–
52
57
–
54
BA: With the Nikon Diffusion Dome attached
WP: With the wide-flash adapter in place
•
•
ISO 100 · m
Guide number table
The SB-900 guide numbers differ depending on the camera’s image area, illumination
pattern, ISO sensitivity, zoom position and flash output level.
Specifications