The PocketWizard AC3 Zone Controller for Canon is manufactured to work with Canon’s E-TTL II system. You can either connect this DSLR camera flash controller to your on-camera MiniTT1 Transmitter or FlexTT5 Transceiver for three independent zones of flash control with each zone having single or multiple flashes.

• The PocketWizard AC3 Zone Controller for Canon is compatible with studio flashes and you can control all the studio flashes directly from the position of your camera
• You can place the studio flashes wherever you need, since you can easily control the flashes from anywhere with this AC3 ZoneController
• This DSLR camera flash controller works in PowerTracking, E-TTL II, CLS/i-TTL, and Manual mode
• You can maximize or minimize the power of these zones up to six stops flash in 1/3-stop increments
• Camera flash accessories like this AC3 ZoneController are simple to use and even come with a perceptive interface
• The PocketWizard AC3 Zone Controller for Canon can be used with the PowerST4 or AC9 AlienBees Adapter for controlling ElinchromRX, White Lightning and AlienBees flash
  
  
  
  
  

Compatibility: Canon E-TTL II, Nikon CLS/i-TTL, Elinchrom RX, AlienBees, White Lightning
Mounting: Hot shoe
Selector Switch: Off, Manual, Auto (PowerTracking, E-TTL II, CLS/i-TTL)
Adjustment Range: Auto = +/- 3 stops, 1/3 stop increments
Status indicator: LED: Green status indicator
Operating temperature: Above -15° C (5° F) and below 50° C (120° F)
Storage temperature(without battery): Above -30° C (22° F) and below 85° C (185° F)
Construction: High impact plastic
Power: No battery required.  Minimal power requirements received from the MiniTT1 or FlexTT5.
Dimensions: 2" (5cm) wide x 1.7" (4.2 cm) long x .9" (2.1cm) tall
Weight: .82 ounces (23.25 grams)