Olympus MACRO FLASH SYSTEM Instructions Manual page 23

Light intensity adjustment
The light intensity ratio (guide number) can be adjusted in 1/3-step increments.
MACRO FLASH CONTROLLER
FC-1
LIGHT
RATIO GN/
Light intensity
ratio
The light intensity adjustment must be set to ON in the Cus-
tom Setup operation (page 46).
MODE
• The indicator appears in the control panel.
LAMP
AUTO
CHECK
1.
Turn dial B to select a light intensity adjustment value in
TEST/
CHARGE
the following steps.
0
POWER
0
Adjustment
2.
setting
Even if the camera's flash adjustment mode is selected, it
will not be applied. Only the adjustment set on the Ring
Flash is applied.
[Example]
RF-11
Camera
+0.3 +0.7
Turning the dial further increases the light intensity ratio.
–0.3 –0.7
Turning the dial further decreases the light intensity ratio.
Adjustment
Light intensity adjustment
setting
display on the control panel
+0.3
+0.3
Actual adjustment
value
+0.3 +0.3