On the original OM-1, the sync socket affects both the shoe and the pc
outlet. With the 1N, Olympus modified the sync circuit with a diode to
make the shoe always X.
They did this specifically so you could accidently set the switch to FP and
still get your electronic flash pics in sync.
Since noone uses flashbulbs anymore, I disable the FP function.
John
Dan Lau wrote:
> On Mon, 17 Aug 1998 09:11, John Hermanson <omtech@xxxxxxxxx> wrote:
> >Sounds like your camera is set to FP (flashbulbs) which fires the flash
> >way before the shutter opens.
> >Set to X and epoxy in place.
> >When I do any OM-1 now, I modify the flash sync, so the sync socket is
> >always X regardless of switch setting.
> >
> >John
>
> Can I have a little more clarification on this. All along, I thought
> that the X/FP switch only affects the "flash socket" and not the hot
> shoe. When I bought the used OM-1, it didn't come with a manual, so
> I called Olympus and they sent me a free copy of the OM-1n manual.
> Here is what the OM-1n manual (0480) has to say about the little
> switch (appearing in the section of "Flash other than the T32/T20"):
>
> NOTE: Mounting the electronic flash unit to the accessory shoe
> automatically completes the "X" synchro circuit. However, there
> are some flash units which do not fire unless the selector is set
> to "X".
>
> So it looks like the OM-1 functions differently than the OM-1n (the
> FAQ mentioned this difference, but I didn't know this is what it was
> talking about until now). It looks like by the time the OM-1n came
> out, they severed the link between the switch and the hot shoe. I'd
> assume the OM-2n works like the OM-1n, whereby mounting a flash sets
> it to "X" sync automatically. What about the OM-2? Does the X/FP
> switch also affect the hot shoe in the same manner as the OM-1?
> Thanks.
> -Dan
>
>
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