The new Pentax AF360FGZ flash, which was designed around the new MZ-S camera
seems to work in a unique way. In wireless P-TTL mode, the camera's RTF and
the AF360 communicate with each other via flash. Although it's not obvious
to see, the RTF sends a flash to the 360 to communicate the camera mode.
The 360 in return sends a flash to the RTF to give the camera exposure data,
the RTF again flashes again to tell the 360 when to quench, at which time
the 360 fires for the exposure.
Bill, KG4LOV
wowens1@xxxxxxxxxxxxxxx
----- Original Message -----
From: <Tom@xxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, December 17, 2001 8:06 PM
Subject: RE: [OM] Cordless TTL?
> I've found 2 kinds of cordless TTL
> - radio waves - camera make specific
> - slaves which sense the shutoff & quench ASAP - These don't depend on a
> particular make. Ikelite makes them
>
> Tom
>
> On Monday, December 17, 2001 at 16:57, Daniel J. Mitchell
> <olympus@xxxxxxxxxxxxxxx>
> wrote re "RE: [OM] Cordless TTL?" saying:
>
> > > The simple slaves trigger the flash, but don't offer any interaction
with
> > > the camera for TTL. This means that the camera doesn't get the quench
> > signal
> > > to the flash.
> >
> > Hm, that's pretty unhelpful of them. Ah, right, I see; checking on B&H,
> > some of the slaves there have power settings, so I guess you have to
treat
> > the slave as a manual flash and work out all the exposure the hard way.
What
> > a pain. (I was assuming the slave would only fire for as long as the
master
> > is firing (barring slave running out of oomph, at least)).
>
> ------------------- http://groups.yahoo.com/group/ottawa-
> photo-clubs
> tOM A. Trottier, ICQ:57647974 http://abacurial.com
> 758 Albert St, Ottawa ON Canada K1R 7V8
> +1 613 860-6633 fax:231-6115 N45.412
> W75.714
> "The moment one gives close attention to anything,
> even a blade of grass, it becomes a mysterious,
> awesome, indescribably magnificent world in itself --
> Henry Miller, 1891-1980
>
>
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