Flash Tab

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Exposure

The flash tab contains controls that influence the behavior of both TTL and manual flashes connected to compatible PocketWizard radios.

Speedlite:

Adjusts how Speedlites will respond to the AC3 or ControlTL Transmitter with no AC3. Set to "Normal E-TTL" or "Normal i-TTL" to have remote E-TTL/i-TTL flashes respond to ControlTL or TTL changes normally. Set to "No Change (Trigger Only)" and this transmitting radio will not change the light level put out by remote Speedlights - the remote Speedlite will trigger at the last level set. Use "No Change (Trigger Only)" if you are working with another camera that is controlling the flash output levels.

Note that selecting "No Change (Trigger Only)" on this menu disables power controls ONLY for Speedlights - studio power controlled flashes using a PowerST4/PowerMC2/AC9 will still respond normally. To disable studio power controls as well, select "No Change (Trigger Only)" under the PowerTracking tab.

Force TTL Master Mode (Canon Only)

This mode enables the use of a Speedlite that lacks Master Mode in the shoe of a ControlTL transmitter to trigger remote flashes. The transmitter tells the camera that Master Mode is active even though that mode is not available or set in the flash. All TTL remotes will operate as one zone of light when used this way.

This also benefits the 580EX (I and II) as it will emit fewer communication flashes. This reduces the "flickering pre-flash" that bothers some subjects. All flash controls remain active including the ability to adjust remote flash power from a 580EX. If you wish to retain the ability to toggle on and off your remote flashes using the control on your 580EX or 580EX II when not in ratio mode, you will need to uncheck "Force TTL Master Mode."

Pre-Flash Boost

In certain TTL situations, especially when shooting in full sun or over long distances, the normal pre-flash is simply not enough for the camera to see. When Pre-Flash Boost is engaged, you get a pre-flash that is two stops brighter. This will approximately double the distance that the camera can make sense of the TTL pre-flash information, or help compensate for the reduced output caused by a light modifier or bounced flash.

Local Pre-Flash Boost Mode:

For a transmitting radio, sets when Pre-Flash Boost is engaged for the flash on camera.

Remote Pre-Flash Boost Mode:

(FlexTT5 Only)

Sets when Pre-Flash Boost is engaged for the flash attached to this receiving FlexTT5's shoe.

Remote Beeper:

Determines what settings the remote flash's ready beeper will use the enxt time you half-press the camera's shutter release.

Remote Optical Trigger:

Determines what settings the remote flash's optical trigger will use the enxt time you half-press the camera's shutter release.