Nikon Autofocus Speedlight SB-22 Instruction Manual page 29

_ Align film speed in use with film speed
' index.
Note: Lines between the numbers on the film speed scale
represent intermediate settings. (See illustration.)
32
\
64^-25
80s
125v
' vrlOO
160
-
-200
250
-
-E400
^
320^
0//E 800
500^
640'^- 16oo
1000
^
1250/