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Forums Lobby MASTER YOUR TOOLS - Hardware & Software Nikon Speedlights & Lighting topic #60151
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Subject: "SB 800 odd behavior in SU4 mode" Previous topic | Next topic
Nikonuser0607 Silver Member Nikonian since 05th Jun 2007Mon 10-Dec-12 04:08 AM
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"SB 800 odd behavior in SU4 mode"


Gallatin, US
          

I recently tried using an SB-800 in SU4 mode to get a rimlight on the subject (wife). Main lights at 45 deg. left and right were an SB-800 triggered with a CyberSync and an Alien Bee 400 triggered with Cybersync. After configuring the SB-800 for rim lighting, it began to fire very rapidly (no trigger from CyberSync used) as if in the repeat mode. Any one have a similar incident? I checked the SU4 mode twice to be sure I was not in repeat mode.

Thanks,

Dennis
http://Myphotos08.smugmug.com/share/Z6YXCsFg5QuU6

  

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Replies to this topic
Subject Author Message Date ID
Reply message RE: SB 800 odd behavior in SU4 mode
MEMcD Moderator
10th Dec 2012
1
Reply message RE: SB 800 odd behavior in SU4 mode
Arkayem Moderator
10th Dec 2012
2
Reply message RE: SB 800 odd behavior in SU4 mode
Nikonuser0607 Silver Member
10th Dec 2012
3
Reply message RE: SB 800 odd behavior in SU4 mode
NenBikonian
12th Dec 2012
4
Reply message RE: SB 800 odd behavior in SU4 mode
NenBikonian
12th Dec 2012
5
Reply message RE: SB 800 odd behavior in SU4 mode
Nikonuser0607 Silver Member
17th Dec 2012
6

MEMcD Moderator In depth knowledge in various areas Nikonian since 24th Dec 2007Mon 10-Dec-12 08:17 AM
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#1. "RE: SB 800 odd behavior in SU4 mode"
In response to Reply # 0


US
          

Hi Dennis,

That sounds very strange.
I never had that happen to me.
Assuming you had the SB-800 set at a low power setting.
Was there an InfraRed light source near by when the problem occured?
Good Luck and Enjoy your Nikons!

Best Regards,
Marty

  

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Arkayem Moderator Awarded for his high level skills in flash photography Charter MemberMon 10-Dec-12 03:10 PM
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#2. "RE: SB 800 odd behavior in SU4 mode"
In response to Reply # 0


Richmond Hill, GA (Savannah), US
          

>I recently tried using an SB-800 in SU4 mode to get a
>rimlight on the subject (wife). Main lights at 45 deg. left
>and right were an SB-800 triggered with a CyberSync and an
>Alien Bee 400 triggered with Cybersync. After configuring the
>SB-800 for rim lighting, it began to fire very rapidly (no
>trigger from CyberSync used) as if in the repeat mode. Any
>one have a similar incident? I checked the SU4 mode twice to
>be sure I was not in repeat mode.

Check to see if you have the camera in Red-Eye mode. I'm not sure, but that might trigger a series of flash pulses from the SB800 if it's in a very lower power setting.

Russ
Retired Professional Photographer
Nikonian Moderator
Russell MacDonald Photography
Nikon CLS Practical Guide

  

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Nikonuser0607 Silver Member Nikonian since 05th Jun 2007Mon 10-Dec-12 08:31 PM
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#3. "RE: SB 800 odd behavior in SU4 mode"
In response to Reply # 2


Gallatin, US
          

I'm not sure what you mean by Red eye mode. I did have a light fixture with a CFL bulb. But, I turned it off and still had the problem.

http://Myphotos08.smugmug.com/share/Z6YXCsFg5QuU6

  

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NenBikonian Registered since 30th Sep 2011Wed 12-Dec-12 03:54 PM
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#4. "RE: SB 800 odd behavior in SU4 mode"
In response to Reply # 0


Roswell, US
          

Dennis,

I suspect your problem may stem from having your remote SB800s in SU4 mode while also having them connected to radio triggers (cybersyncs). You are effectively delivering firing triggers simultaneously to both the PC-Sync circuitry and the optical triggering circuitry. Ideally - one should be disabled when the other is employed, so this could point to a design defect (if both SB800's display this behaviour) or a manufacturing defect (if only one displays it).

I suspect that having them in SU-4 mode and triggered optically is somehow causing a kind of infinite loop that results in this behaviour that wouldn't occur if they were not also connected via PC-Sync to your cybersyncs.

Move the SB800s back to manual mode (not remote or SU-4 mode), then try your shot, again. I suspect that will eliminate the problem.

Cheers,
Ben

Visit my Nikonians gallery.

  

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NenBikonian Registered since 30th Sep 2011Wed 12-Dec-12 03:56 PM
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#5. "RE: SB 800 odd behavior in SU4 mode"
In response to Reply # 4


Roswell, US
          

Dennis,

Nevermind my reply. I didn't read your original post thoroughly enough and so didn't catch that the offending unit was NOT triggered by a cybersync.

Ben

Visit my Nikonians gallery.

  

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Nikonuser0607 Silver Member Nikonian since 05th Jun 2007Mon 17-Dec-12 02:36 AM
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#6. "RE: SB 800 odd behavior in SU4 mode"
In response to Reply # 0


Gallatin, US
          

I checked the flash again today and the problem has mysteriously disappeared. Thanks to those who responded. If it recurs I will update again.
Dennis
http://Myphotos08.smugmug.com/share/Z6YXCsFg5QuU6

  

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Forums Lobby MASTER YOUR TOOLS - Hardware & Software Nikon Speedlights & Lighting topic #60151 Previous topic | Next topic


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