Dave,
the spec you provided for the lights does say 5V and you measured it at 5V
,this is a very safe bet you are ok!
Most flashes nowdays are positive with respect to camera ground/Frame. If you
are concerned about polarity check it with the voltmeter you used before:
Connect the negative (black) lead from the voltmeter to the outer ring portion
of the sync connector or the shoe outer flat connection, if using a hot shoe
adapter. Then see if the voltmeter shows positive when you connect to the
center sync connection.
Another cheap option, if you are still paranoid, is to just buy a cheap optical
remote trigger. These are often ~$10 and trigger from a small manual flash unit
in the hotshoe, but point it away from subject so the studio lights set the
exposure.
For people of a practical bent, there is a high voltage sync adapter circuit I
put on Mark Dapoz's website, that I have bulilt into a number of old hi-voltage
flashes. I got an email from somebody in antarctica recently, who was building
it into some of his gear! Although the circuit is aimed at high voltage use, it
should just be ok to trigger at a low voltage of 5V
Tim Hughes
--- On Thu, 11/25/10, David Irisarri <zuiko3000@xxxxxxxxx> wrote:
> From: David Irisarri <zuiko3000@xxxxxxxxx>
> Subject: Re: [OM] HELP need! Using my E-P1 with flash studio heads.
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Date: Thursday, November 25, 2010, 5:42 AM
> Hi all,
>
> Thank you for your reply.
>
> Moose, I also think I can use any hot shoe adapter as the
> voltage is really
> low. I have been using my E-1 all these years and nothing
> has happened. I
> asked all of you this question as the E-P1 hans´t got any
> pc sync connector
> and using the flash hot shoe might cause a problem. Plus
> the polarity of the
> studio flash sync pulse may cause a problem, or not?
>
> I fully agree with "Typical poorly written material from at
> least Oly and
> some other Japanese camera makers. Obviously should read
> something
> like " Studio flash equipment with sync voltage greater
> than 6.5v or unknown
> sync voltage should be connected to the
> E-P1 using our rebranded Wein Safe-Sync."
>
> The price of this adapter is really high and I don´t
> really need it. Olympus
> explanation is reporting you need this Wein Safe-Sync
> adapter and the price
> is https://us.buyolympus.com/safe-sync-hot-shoe-to-pc-sync-adapter.html$99.99
> WOW. That´s cool!
>
> Hi Ken, wireless triggers will have a higher cost. I was
> planning to create
> a good color profile for Lightroom 3 as I am fed up with
> Olympus Studio 2. I
> will use X-Rite Colorchecker Passport and DNG profile
> editor. I have been
> trying to explain Olympus Europe about the problems related
> with Olympus
> Viewer 2 plus now, I cannot use Shading Compensation with
> the E-P1 and they
> still insist I can. I love the color Olympus Viewer 2 gives
> me but I cannot
> waste several day to process 400-500 images and if I turn
> on multicore
> function the application hungs every 5 minutes. Bullshit!
>
> Today I have checked the voltage and it´s 5V so I think I
> can use a much
> cheaper adapter rather than Olympus $99.99 one. They must
> be crazy!
>
> I don´t know what to do with polarity. I think this
> shouldn´t be a problem.
>
> Regards,
>
> Dave
>
> 2010/11/25 Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
>
> > Hmm. That is truly distressing news.
> Remind me not to buy *any* new
> > Olympus equipment. But the suggestion by several
> to use a radio trigger
> > (any of them) will solve the problem and keep the
> cable clutter down.
> > Wein-Safe-Sync. Blah!
> >
> > Dr. Flash
> >
> > On 11/24/2010 8:45 PM, C.H.Ling wrote:
> > > I recommend not to try any old flash on the new
> Olympus digital camera, I
> > > tried an Olympus (PS100G?) on the E-PL1, the
> circuit immediate burnt.
> > > Fortunately the built-in flash still works ok. I
> use the EVF a lot and it
> > > won't accept external flash at the same time
> anyway.
> > >
> > > C.H.Ling
> > >
> > > ----- Original Message -----
> > > From: "Moose"<olymoose@xxxxxxxxx>
> > >
> > > My guess is that it's in fact safe up to at least
> a couple of hundred
> > volts
> > > and a copy writer grabbed something from old
> > > E-1 material. At least I prefer that explanation
> to thinking that Oly
> > > engineers are so deeply incompetent.
> > >
> > > Nothing new. As I recall, there should be lots in
> the archives about Oly
> > in
> > > North America publishing much lower sync
> > > voltage limits for the E-1 than did the
> distributors in Europe.
> > >
> > > Dr. No Flash, but No Fool Moose
> > --
> >
> _________________________________________________________________
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> >
> >
> --
> _________________________________________________________________
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>
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