PocketWizard AC3 - AC3 ZoneController Features Explained; Understanding Power Dials and Mode Switches; Release Button and Status LED

A = Auto Mode - ControlTL compatible flashes will use the Flash Exposure Compensation (FEC)
●
as set on the AC3 Power Dial. Nikon Speedlights will perform i-TTL exposures. When compatible
studio flashes are used, PowerTracking will engage (see the PowerTracking Wiki page or in the
AC9 AlienBees Adapter, PowerST4 or PowerMC2 Quick Guides for more information).
Manual and Auto modes can be used at same time. Manual zones will not be calculated as part of the
E-TTL exposure. Zones set to 0/ (OFF) will not trigger.
FEC NOTE: In Auto Mode, Flash Exposure Compensation (FEC) can be set in more than one place
and the values are used together - all positive and negative FEC values will be combined.
FEC can be set:
●
On each zone independently using the AC3 Power Dial when the zone is set to A (Auto)
❍
On each remote Speedlite using the camera’s FEC control. All AC3 zones set to A (Auto) will be
❍
affected equally.
If the combined FEC adjustments are more or less than your flash’s capabilities, then the flash will
operate at maximum or minimum output accordingly
Release Button
Press the release button to remove the AC3 from your transmitter.
Status LED
The green Status LED blinks occasionally to indicate normal operation.
Power Dials
Sets the flash output power.
AC3 Power Control Chart (Manual)
AC3 Power Dial Setting Speedlights
Most ControlTL
Studio Strobes
(5-stop Range)
White Lightning X800,
X1600 & X3200 Only;
Low Range Mode
+3 1/1 1/1 1/4
+2.7 1/2 + 0.7 1/2 + 0.7 1/8 + 0.7
+2.3 1/2 + 0.3 1/2 + 0.3 1/8 + 0.3
+2 1/2 1/2 1/8
+1.7 1/4 + 0.7 1/4 + 0.7 1/16th + 0.7
+1.3 1/4 + 0.3 1/4 + 0.3 1/16 + 0.3
+1 1/4 1/4 1/16
+0.7 1/8 + 0.7 1/8 + 0.7 1/32 + 0.7
+0.3 1/8 +0.3 1/8 +0.3 1/32 + 0.3
0 1/8 1/8 1/32
-0.3 1/16 + 0.7 1/16 + 0.7 1/64 + 0.7
-0.7 1/16 + 0.3 1/16 + 0.3 1/64 + 0.3
-1 1/16 1/16 1/64