Long Range Performance
108
Range Extending Options
Orientation
Solutions for improved range performance with the Canon 430EX, 580EX and 580EX II flashes.
- These flashes emit high levels of RF interference that can affect any PocketWizard radio.
- NOTE: The Canon 600EX-RT, 430EX II, 550EX, 420EX and 270EX have excellent range performance because
they do not have high RF noise emissions.
The 600EX (not RT) has not yet been tested.
Every electronic device emits some amount of unintended radio frequency (RF) noise. These emissions can range
from very little to a lot depending on many factors. This noise can be troublesome for any radio device that depends
on receiving radio signals because the RF noise may make it harder for the device to hear the incoming signal. It’s
the same as trying to listen to someone talk at a party when everyone around you is talking at the same time and the
noise level is very high.
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AC5 on a Canon 580 EX II.
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A few Canon flashes, including the popular 580EX II, 580EX and 430EX, emit strong RF noise across the frequency
range used by PocketWizard radios, impacting both the FCC 344MHz radios used in the American market and the
CE 433MHz radios used in Europe and other international markets. This interference can impede the out-of-box
range performance with any PocketWizard radio. We have found that the amount of interference varies from flash to
flash so it is impossible to say precisely what the impact is. In our testing, we found some 580EX II's worked
consistently on an FCC 344MHz FlexTT5 Transceiver in the upright position at 100 feet (33 meters) or more.
However, some flashes we tested were noisier and in the worst-case scenarios, without any intervening steps to
improve range, consistent working range was reduced to 30 feet (10 meters). There are several ways to improve
signal reception and thus increasing the range performance of the radios.
Although many of these solutions are demonstrated with a receiving FlexTT5, they can be applied to any
PocketWizard radio, including the Plus III, Plus X and MultiMAX.
Read More About Internal Modification to Canon 580EX II reduces RF emissions. here
[1]
.
The AC5 RF Soft Shield is now available, this is your first line of defense against noisy flashes. With the AC5
correctly installed, your range will increase substantially. For information on how to properly install the the
AC5, click here
[2]
.
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