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F–18
F
Tips 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
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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