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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 28 Sep 2009 (Monday) 23:31
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Sekonic L358 + PocketWizard FlexTT5 + 580EXII Help!

 
andrepaul
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Sep 28, 2009 23:31 |  #1

Recently acquired the L358 w/RT32 module and trying to configure it to fire my 580EXII via Flex TT5. After reading a few setup issues and resetting the Flex via PocketWizard's Utility, I got it working.

My issue is that after I've gone about 5ft, the 580EXII does not fire. I fire my 430EXII on the same Flex TT5 from even farther distance than 10ft and it works. With both flashes set up on 2 Flex TT5, most times only the 430EXII fires. If I move closer to the 580EXII (less than 5ft) both flashes will fire.

Flashes are both in manual mode. But why isn't the 580EXII firing from distances more than 5ft and the 430EXII does??


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BTBeilke
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Sep 29, 2009 00:05 |  #2

It could be this problem:

While the FlexTT5 works ideally upon many older Canon flashes, the 580EX, 580EX II, and 430EX emit strong RF noise across the PocketWizard's frequency range, and this significantly reduces out-of-box range performance of the FlexTT5 Transceiver. In PocketWizard's research, the interference from the flash varies wildly from sample to sample. They can only guarantee that the flash will work to ~30' (~10m) in all conditions.


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MDteX
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Sep 29, 2009 08:22 |  #3

Must be the RF. I guess I have OK units. My 580EXII's have fired everytime but I have not tested the range from more than 20 feet or so. Check the threads for getting optimal performance such as positioning and orientation.


Canon 1DMkIV, Canon 1DMkIII, Canon 50D
24-70 f2.8L, 85 f1.2L II, 70-200 f2.8L ISII, 300 f2.8L IS
2 x 580EXII, 430EXII, 3 x PocketWizard FlexTT5, Mini TT1 & Cybersyncs

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andrepaul
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Sep 29, 2009 08:57 |  #4

Ok thanks. Someone suggested using different channels on the L358, I'm using channel 1 currently. I'll try some more to see if the 580EXII does better, if I was getting 20ft, I'd be quite happy.


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k_strecker
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Sep 29, 2009 09:56 |  #5

if you haven't taken to setting up your 580EXII like Figure 3 on this page

http://www.pocketwizar​d.com …rations/technol​ogy/range/ (external link)

start doing so, it should help tremendously.




  
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andrepaul
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Sep 29, 2009 13:41 |  #6

Thanks for the link. I wasn't having range issues with just the Flex as receiver and Mini transmitting though, just now with the L358. But I suppose the mechanism is the same so I'll try that when I get home later.


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k_strecker
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Sep 29, 2009 13:57 |  #7

choomps wrote in post #8728141 (external link)
Thanks for the link. I wasn't having range issues with just the Flex as receiver and Mini transmitting though, just now with the L358. But I suppose the mechanism is the same so I'll try that when I get home later.

Well, the mini transmits at more than 10x the power of your light meter :)




  
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andrepaul
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Sep 29, 2009 19:04 |  #8

I see, didn't know that. Tried changing channels like the link suggested; using C2 on the Flex. I also changed the position, and while it might have improved, the difference is not enough. I actually feel like getting rid of the 580EXII now. :(

And that gadget they have, AC7, not sure it's out on the market yet. Do you know if AB lights have similar issues; now might be a good time to get some AB800s.


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k_strecker
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Sep 29, 2009 19:27 |  #9

AC7's not out yet, should be an update on it's status this week or next.

there seems to only be 3 flashes in the whole universe that have this problem 430EX, 580EX, 580EXII.

you'll get full PW range and reliability with studio strobes.




  
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andrepaul
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Sep 29, 2009 19:45 |  #10

Cool, thanks a lot.


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k_strecker
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Sep 29, 2009 19:57 |  #11

Though I will add, I get a lot more range than 10 feet with my sekonic and a 580EX.

My 580EX seems to be pretty low noise, someone else's may be worse than your 580EXII, there's no way to know.

thanks canon. :)




  
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xpond
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Oct 06, 2009 20:19 |  #12

Regarding RF noise it is my understanding that the 580EXII is quite a bit worse than the 580EX.




  
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Sekonic L358 + PocketWizard FlexTT5 + 580EXII Help!
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