Nikon SB-900 - Manual (Page 66)

D–16
D
Flash modes and functions
Setting the fl ash output level
Press the Function button 1, and then rotate the selector dial to change the flash
output level.
When you rotate the selector dial clockwise, the indicated denominator
decreases (flash output level increases).
When you rotate the selector dial counterclockwise, the indicated denominator
increases (flash output level decreases).
The flash output level changes in ±1/3 steps except between 1/1 and 1/2. 1/32
(-0.3) and 1/64 (+0.7) represent the same flash output level.
In default setting, flash output level compensation between 1/1 and 1/2 is ±1
step. This step can be changed to ±1/3 using custom setting (kC-22). With
some cameras, and when using faster shutter speeds with a flash output level
greater than M1/2, actual flash output may decrease to M1/2 level.
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Manual mode
1/128 1/128 ( + 0.3) 1/128 ( + 0.7) 1/64
1/1 1/2 1/64 ( + 0.7) 1/64 ( + 0.3)
1/1 1/128 1/4 ( – 0.7) 1/4 ( – 0.3) 1/4
1/2 1/2 ( – 0.3) 1/2 ( – 0.7)
1/1 1/2 1/64 1/128
(large) flash output level (small)
distant shooting distance near