PowerTracking Tab

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Exposure

PowerTracking allows you to adjust your remote studio flash's output power via the camera's FEC, ISO, and aperture controls. PowerTracking happens automatically when you have a MiniTT1 or FlexTT5 on a Canon or Nikon camera and you are controlling a compatible studio flash connected to a supported PocketWizard radio.

Full Manual

Turns off PowerTracking for aperture and ISO. With an AC3 ZoneController on the transmitter, any zones set to Auto Mode will operate as "Center on ISO & Aperture with First Shot (Set Below)". AC3 Manual Mode can be used to adjust flash output power manually with an AC3. The behavior of this control differs somewhat between Canon and Nikon radios:

Canon: With no AC3 ZoneController on the transmitter, the camera's ISO and FEC controls will adjust flash power output level.

Nikon: With no AC3 ZoneController on the transmitter, the camera's FEC and Exposure Compensation control will adjust flash power output level.

Center on ISO & Aperture with First Shot

The aperture and ISO as set on the camera for the first exposure after powering on the MiniTT1 or FlexTT5 will be used as the center values for PowerTracking. For example, if your camera is set to ISO 100 and F:5.6 for its first exposure, then those exposure settings will equal 3 stops down from your flash's maximum output power. Adjustments to aperture, ISO, and FEC will adjust flash output power accordingly, as will adjusting the Power Dial on an AC3 zone in Auto Mode.

Follow these steps to set the aperture and ISO values that will be used as the center point:

1. Turn on your camera and MiniTT1 or FlexTT5, but do not press your shutter button or take any pictures.
2. Set the aperture and ISO you wish to use at the center point. Shutter speed is not used for this setting.
3. Press the shutter button to take a picture. The center point is now set.
4. Adjust your camera's ISO, aperture, or FEC to control flash output from the camera automatically via PowerTracking.

Center on ISO & Aperture - Set Both Below

Lets you control the exposure settings where the center for PowerTracking will begin. Adjust the drop-down boxes for the Aperture Center-On and ISO Center-On values you want to use as teh center point (3 stops down from your flash's maximum power) for PowerTracking.

Center on Aperture Only - Set Aperture Below

PowerTracking will only work with aperture changes. Set the desired aperture using the Aperture Center-On control. ISO changes will be ignored for PowerTracking.

Center on ISO Only - Set ISO Below

PowerTracking will only work with ISO changes. Set the desired ISO using the ISO Center-On control. Aperture changes will be ignored for PowerTracking.

No Change (Trigger Only)

Turns off PowerTracking and the Power Dials will not adjust the power output of your remote flash. Use this setting if another AC3 is controlling the flash's manual power output, like when sharing flashes with another photographer and you want to use the exat same manual flash output power. Note that selecting "No Change (Trigger Only)" on this menu disables power controls ONLY for studio remotes using a PowerST4/PowerMC2/AC9. To disable speedlight power controls as well, select "No Change (Trigger Only)" under the Flash Tab tab.

Aperture Centered On:

Use this control to specify the PowerTracking center point relative to aperture.

ISO Centered On:

Use this control to specify the PowerTracking center point relative to ISO.

AC9 Flash Exposure Compensation: (FlexTT5 Only)

Use this control to adjust the FEC of the flash directly connected to the AC9 in this receiving radio's hot shoe. This setting is cumulative with other FEC values set in the system. FEC can be adjusted in +/- 3 stops.