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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 27 Jan 2012 (Friday) 12:52
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Wein Safe Sync

 
rayh2
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Jan 27, 2012 12:52 |  #1

I've been using a Wein HSHSB flash adapter for years on my 300D with a Sunpak 611. I have upgraded to the T3i but cannot get the flash to fire. Is there a custom setting in the camera that must be turned on?




  
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Wilt
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Jan 27, 2012 19:09 |  #2

Eliminate the Wein Safe Synch with your T3i....ever since the 20D was launched, Canon dSLRs built as of that point and later are all safe for 250v synch voltage. Sunpak 611 has 4v, but some old units have 190v trigger -- either safe for your T3i


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rayh2
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Jan 28, 2012 14:05 as a reply to  @ Wilt's post |  #3

Thank you !




  
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OneJZsupra
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Jan 28, 2012 15:31 |  #4

Wilt wrote in post #13780617 (external link)
Eliminate the Wein Safe Synch with your T3i....ever since the 20D was launched, Canon dSLRs built as of that point and later are all safe for 250v synch voltage. Sunpak 611 has 4v, but some old units have 190v trigger -- either safe for your T3i

Those numbers (250v) are for the pc sync port only correct? If I remember correctly canon dslr's are rated up to 6v for hotshoe mounted flashes. I just don't want someone to get mixed up thinking its safe to use a 200+ volt flash unit on their hotshoe.


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msowsun
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Jan 28, 2012 15:51 |  #5

Your memory may be faulty..... ;)

According to Canon's Chuck Westfall (in the "DigitalJournalist") all the newer DSLR's are safe with trigger voltages up to 250 volts.

http://www.digitaljour​nalist.org/issue0703/t​ech-tips.html (external link)

Tech Tips
March 2007
by Chuck Westfall

It's likely you'll never see an official list of all Canon SLRs according to this specification, because Canon Inc. (our parent company in Japan) simply doesn't do things like that. I've been with Canon USA since 1982, so I'm in a pretty good position to know Canon Inc.'s habits. However, I'll be happy to provide you with my unofficial list:

Canon Digital SLRs safe for TCV up to 250 volts:
EOS-1D Mark II N, EOS-1D Mark II, EOS-1Ds Mark II, EOS-1D, EOS-1Ds
EOS 30D, 20D, 5D
EOS Digital Rebel XTi, XT (400D/350D)
EOS D6000/D2000, Kodak DCS560/DCS520 (circa 1998)
EOS-DCS series (circa 1995)

Canon Digital SLRs safe for TCV up to 6 volts:
EOS 10D, D60, D30
EOS Digital Rebel (300D)

Canon 35mm SLRs safe for TCV up to 250 volts:
EOS-1V, EOS-1N, EOS-1, EOS 3

Canon 35mm and IX240 SLRs safe for TCV up to 6 volts:
EOS 650, 620, 630, RT
EOS 850, 750, 700
EOS Rebel Series
EOS Elan Series
EOS 10s, A2E, A2
EOS IX, IX Lite
T90


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Jan 28, 2012 16:02 |  #6

msowsun wrote in post #13784635 (external link)
Your memory may be faulty..... ;)

According to Canon's Chuck Westfall (in the "DigitalJournalist") all the newer DSLR's are safe with trigger voltages up to 250 volts.

http://www.digitaljour​nalist.org/issue0703/t​ech-tips.html (external link)

But thats for the PC sync correct? Not the hot shoe.... At least thats what I believe I saw not to long ago, i'm still trying to find where I saw this.


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msowsun
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Jan 28, 2012 16:06 |  #7

Many of the cameras in that list don't have a PC sync port, and many of the Canon camera manual's now state the 250 volt limit.


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Jan 28, 2012 16:10 |  #8

Thanks I guess I'll just have to look into it.


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msowsun
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Jan 28, 2012 16:22 |  #9

You may be more right than wrong. I just looked it up and here is what the 7D manual says:


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Jan 28, 2012 16:50 |  #10

Chuck Westfall himself has stated in the past that there is only a single trigger circuit in the camera, not two http://digitaljournali​st.org/issue0703/tech-tips.html (external link)

"The trigger circuit voltage (TCV) rating for any EOS SLR is the same on the hot shoe as it is on the PC terminal (if the camera has one), but the acceptable TCV level varies according to the camera model. Incidentally, the main reason for the difference is the way the X-sync signal is generated. With the 250V cameras, the X-sync signal is generated electronically. With the 6V cameras, the X-sync signal is generated mechanically. There are no guarantees, but going forward I anticipate that most if not all future EOS SLRs will be safe for TCV up to 250 volts. "


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rayh2
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Feb 04, 2012 14:22 |  #11

Well guys thank you for the information but I'm still a bit confused. So is it safe or not to use a Sunpak 611 on a 600D (T3i)? The info listed above does not list the 600D (obviously since this info is from 2007).
Thank again.




  
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Wilt
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Feb 04, 2012 14:35 |  #12

Any CANON dSLR made ever since the 20D was launched (as of 2004 when Canon 20D was launched, and later) is safe to 250v trigger voltage, on both hotshoe and PC terminal ; the Sunpak trigger voltage is <250v (newer units 4v, but some old units have 190v)


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Feb 04, 2012 21:56 |  #13

seoul4korea wrote in post #13784670 (external link)
But thats for the PC sync correct? Not the hot shoe.... At least thats what I believe I saw not to long ago, i'm still trying to find where I saw this.

From the same info from Chuck Westfall.

"The trigger circuit voltage (TCV) rating for any EOS SLR is the same on the hot shoe as it is on the PC terminal (if the camera has one)"

The tolerance is exactly the same for the hotshoe or the PC port.

Here is the link to the info:

http://digitaljournali​st.org/issue0703/tech-tips.html (external link)

Enjoy! Lon


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Wilt
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Feb 05, 2012 00:38 |  #14

Hey, Lon, I already said that! :cool: I understand, all those long hours working into the night so that you can watch the Super Bowl on Sunday :lol:


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OneJZsupra
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Feb 05, 2012 19:43 |  #15

Thx all for clearing that up


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