Controlling E-TTL Ratio Flash with PocketWizard’s MiniTT1 and FlexTT5 and the Canon flash system is easy. The ControlTL system seemlessly transmits the ratio commands from your on-camera flash to your remote flashes.  Simply leave your remote flash in basic E-TTL, place in the remote FlexTT5's hot shoe, and set the A-B-C Zone selector on the FlexTT5 to put your remote flash in the right zone or slave group.  Control the balance of light between your on-camera and remote flashes using the familiar Canon flash controls.

NOTE: The Wireless Ratios with on-camera Flash video explains ratios when using an on-camera flash.  This video, Wireless Ratios with Remote Flash, explains how to manage ratios with your on-camera flash not contributing light to the scene and acting just as a ratio controller.

Here's how to get started,

STEP 01
With camera-mounted MiniTT1 or FlexTT5 turned OFF, slide a 580EX II into the PocketWizard’s dedicated hot shoe and lock it in place.

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STEP 02
Enable MASTER mode for the on-camera flash: press and hold the ZOOM button on the 580EX II until the flash icon and “OFF” appear.  If you are using the original 580EX, just set the OFF/MASTER/SLAVE switch to MASTER and skip to Step 4.

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STEP 03
Turn SELECT dial to see blinking “MASTER + ON”

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Press the SELECT button in the center of SELECT DIAL.
MASTER mode is now set.

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STEP 04
Now enable Ratio mode for the on-camera flash: Press the ZOOM button TWICE to see RATIO + OFF blink.

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Turn the SELECT dial to see ON + RATIO + A B

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Press the SELECT button. MASTER Ratio mode is now set.

STEP 05
Now set the on-camera flash to not contribute light to the scene: Press the ZOOM button THREE TIMES to see the flash icon + ON.
Turn the SELECT dial on the flash until you see OFF.

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Press the SELECT button. The on-camera flash is now set to not contribute light to the scene. Set the on-camera PocketWizard to C.1 or C.2.

STEP 06
Slide a compatible Canon Speedlite into the dedicated shoe of a receiving FlexTT5, lock it onto the shoe. Set it to C.1 or C.2 and switch the flash unit ON.
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Set one of the FlexTT5 Zone Selector switches to “A” and the other to “B.”

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Do not set the remote flash to SLAVE mode or worry about matching the Canon Channel.  The FlexTT5 handles all of that for you.  Just leave the remote flash in basic E-TTL mode.

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Now simply turn the SELECTOR dial on the camera-mounted 580EX /EX II controller to change the flash ratio to make remote flash “A" brighter or make remote flash “B” brighter.

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Ratio with ST-E2

You can also use the compact Canon ST-E2 Speedlight Transmitter with the PocketWizard MiniTT1 or FlexTT5 for ratio control.

Step 01
Slide the ST-E2 on the hot shoe of the MiniTT1 or FlexTT5 mounted on your camera.

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Step 02

Slide a compatible Canon Speedlite into the dedicated shoe of two receiving FlexTT5 units, lock them onto the shoes and switch both units ON.

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Set one of the FlexTT5 Zone Selector switch to “A” and the other to “B.”

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Do not set the remote flash to SLAVE mode or worry about matching the Canon channel.  The FlexTT5 handles all of that for you.  Just leave the remote flash in basic E-TTL mode.

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Step 03
Press the “Ratio On” button on the ST-E2 to enable ratio control.

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Step 04

Now simply press the “left” button to make flash “A” brighter or the “right” button to make flash “B” brighter.

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