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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 05 Aug 2009 (Wednesday) 17:20
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Optical flash trigger

 
Shooting
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Aug 05, 2009 17:20 |  #1

I have the 580ex II, is there a way to use an optical flash trigger on it? I put a flash on my hot shoe and then the 580ex on a tripod or stand and an optical triggering device under it. Can that be done and not short out the contacts since all the flash contacts will be in contact with a metal hot shoe adapter?

thanks.




  
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Aug 05, 2009 17:33 |  #2

the 580 will work on an optical slave in manual mode. Are you connecting it through the pc socket? I dont know what sort of hot shoe adapter you have but there are a couple types. The ones from flashzebra are deep enough that the flash contacts dont do metal on contact point. Another option is to unscrew the hot shoe adapater and use the plastic foot that came with your flash, it has a thread on it.




  
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40Dude6aedyk
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Aug 05, 2009 17:49 as a reply to  @ gonzogolf's post |  #3

I lent a 580EXII to a colleague who used it in manual mode with an optical trigger attached to the foot. It sure seemed like it would fire just once by the trigger and then not again until turned off and on. I vaguely remember something funny like this reported on this forum, but since it wasn't my photo shoot, I didn't investigate further.


Canon 40D; Canon 70-200 mm f/2.8L IS, 17-55mm f/2.8 IS, 85 mm f/1.8; 580EX II; Sigma EF-530 DG Super; CyberSyncs

  
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Aug 05, 2009 18:52 as a reply to  @ 40Dude6aedyk's post |  #4

Ok..I haven't done anything yet, I want to be sure it all works fine and what to get before I give it a try. If I have to use it in manual mode then I may as well use my Vivitar 283, right?

But if I use it in manual mode, I'll have to adjust the power settings on the flash, right?




  
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Aug 05, 2009 20:37 |  #5

Shooting wrote in post #8406586 (external link)
Ok..I haven't done anything yet, I want to be sure it all works fine and what to get before I give it a try. If I have to use it in manual mode then I may as well use my Vivitar 283, right?

But if I use it in manual mode, I'll have to adjust the power settings on the flash, right?

yes, unless you are using some trigger like the radio poppers that retains ettl there is no communication with the camera and its pretty much like using the 283. Except your 580ex is more efficient with batteries and you can zoom the head to change the angle of coverage. I dont know the relative guide numbers, but I'd guess the 580exII is a little more powerful than the 283.




  
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Aug 05, 2009 21:24 |  #6

gonzogolf wrote in post #8407155 (external link)
yes, unless you are using some trigger like the radio poppers that retains ettl there is no communication with the camera and its pretty much like using the 283. Except your 580ex is more efficient with batteries and you can zoom the head to change the angle of coverage. I dont know the relative guide numbers, but I'd guess the 580exII is a little more powerful than the 283.

:( so that means I'll be shooting test after test while the people are waiting for the real pictures to be taken....don't want to do that..guess I'll save some money to get a radio popper so I can use the ettl feature and take less time testing so they won't have to get tired of waiting.




  
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Aug 05, 2009 21:25 |  #7

Shooting wrote in post #8407455 (external link)
:( so that means I'll be shooting test after test while the people are waiting for the real pictures to be taken....don't want to do that..guess I'll save some money to get a radio popper so I can use the ettl feature and take less time testing so they won't have to get tired of waiting.

or get a light meter, or get a 24ft ocf cord from flashzebra so your 580 can go off camera for about $55. Also keep in mind that the radio poppers still require a flash on the camera to serve as a master, all they do is change the canon infrared system to a radio system.




  
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Aug 06, 2009 00:37 |  #8

40Dude6aedyk wrote in post #8406233 (external link)
I lent a 580EXII to a colleague who used it in manual mode with an optical trigger attached to the foot. It sure seemed like it would fire just once by the trigger and then not again until turned off and on. I vaguely remember something funny like this reported on this forum, but since it wasn't my photo shoot, I didn't investigate further.

www.flashzebra.com (external link) has optical units that are designed to overcome this issue. They work great on the EX units.


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Aug 06, 2009 09:57 as a reply to  @ Titus213's post |  #9

A friend gave me this link.
http://cgi.ebay.com/PT​-04-Wireless-Flash-Trigger-Receiver-580EX-SB-800-T1M_W0QQitemZ330332075​598QQcmdZViewItemQQptZ​LH_DefaultDomain_0?has​h=item4ce953764e&_trks​id=p3286.c0.m14 (external link)




  
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Aug 06, 2009 13:17 |  #10


Those provide sync only, no ettl communications. They will allow you to fire the flash remotely, but no automatic exposure control.




  
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Aug 06, 2009 20:54 |  #11

gonzogolf wrote in post #8411410 (external link)
Those provide sync only, no ettl communications. They will allow you to fire the flash remotely, but no automatic exposure control.

:cry:

so what would I have to get that would also provide exposure control?




  
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Aug 06, 2009 22:29 |  #12

there are 4 options to do that. Another canon speedlight and use the built in wireless system, this uses infrared/optical triggering and requires line of sight. You can extend that capacity with radio poppers, or the new pw wizards. The cheapest, ($55) is the 24ft off camera flash cord from flashzebra.com




  
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Aug 08, 2009 11:50 |  #13

gonzogolf wrote in post #8414300 (external link)
there are 4 options to do that. Another canon speedlight and use the built in wireless system, this uses infrared/optical triggering and requires line of sight. You can extend that capacity with radio poppers, or the new pw wizards. The cheapest, ($55) is the 24ft off camera flash cord from flashzebra.com

Ok thanks bunches..I'll go the cord route.




  
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Aug 08, 2009 17:30 |  #14

I think you'll be happy with it. Wireless options are nice, but this a lot cheaper way to retain ettl.




  
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Optical flash trigger
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