We'd maybe never know the difference. Of the several flash bulb guns
I've owned I believe all were designed only for attachment to the PC
socket. But I could be wrong. That was a long time ago.
Chuck Norcutt
John Hermanson wrote:
> Yes, as I recall, on the 1N / 2N, FP sync is available only at the sync
> socket. I have never used FP.
> ___________________________________
> John Hermanson | CPS, Inc.
> 21 South Ln., Huntington NY 11743
> 631-424-2121 | www.zuiko.com
> Olympus OM Service since 1977
> Gallery: www.zuiko.com/album/index.html
>
>
> Chuck Norcutt wrote:
>> So, with the 2N and 1N you'd have to use the PC connection as well as
>> setting the sync to FP in order to use a flash bulb?
>>
>> Chuck Norcutt
>>
>>
>> John Hermanson wrote:
>>> Only the 2N (and 1N) have constant X sync at the hot shoe regardless of
>>> sync switch position, and that is with any flash, not just Ts. There's
>>> a diode in the flash circuit that allows this, though it does prevent
>>> some studio flashes from firing.
>>>
>>> Olympus Service made up a small plastic "doohickey" that snaps in behind
>>> the sync switch. It was created for use on UPI ad National Geographic
>>> cameras. It holds the switch at X and prevents accidental turning. I
>>> have some of those.
>>>
>>> ________________________________
>>> John Hermanson | CPS, Inc.
>>> 21 South Ln., Huntington NY 11743
>>> 631-424-2121 | www.zuiko.com
>>> Olympus OM Service since 1977
>>> Gallery: www.zuiko.com/album/index.html
>>>
>>>
>>> Chuck Norcutt wrote:
>>>> See your OM-2 manual. If you have a T-flash mounted the camera senses
>>>> it and automatically sets X sync regardless of the switch setting. If
>>>> you don't have a T-flash mounted you're responsible to set the sync to
>>>> FP or X yourself.
>>>>
>>>> Flash bulbs used to be sold in different types. FP was the type to be
>>>> used on cameras that had focal plane shutters. The characteristic of an
>>>> FP bulb was a long burn time. Since the bulb puts out light
>>>> continuously the bulb is able to sync the full range from 1/60 to
>>>> 1/1000. But the manual says not longer than 1/60. 1/60, of course, is
>>>> the max for OM cameras on X sync. But I don't know if you'd get proper
>>>> sync for both regardless of sync setting at 1/60. I think not. I
>>>> suspect the bulb on FP would get lit as soon as the first shutter
>>>> curtain started to open. But that would be a disaster for an X sync
>>>> electronic flash. It would have dumped it's charge completely before
>>>> the first curtain got off the starting gate. That's probably what
>>>> happened to you.
>>>>
>>>> I've never done it myself but I can recall someone on this list from
>>>> many years ago describing some way to lock the sync switch on to X. It
>>>> may have been a tiny dab of contact cement which would be easily
>>>> removable if desired. I just went to take a look at my OM-1's sync
>>>> switch to check how it might be done and was a bit startled to find it
>>>> setting on FP. Ooops!
>>>>
>>>> Chuck Norcutt
>>>>
>>>>
>>>> usher99@xxxxxxx wrote:
>>>>> Thanks Chuck, AG, Carlos for thinking about this. Carlos hit the nail
>>>>> on the head. Couldn't be an easier fix but wish the penalty for missing
>>>>> that hadn't been so high. Happened once about 5 years ago in Montana
>>>>> but I had a T-flash in TTL mode and I think you get a heads-up.
>>>>> I don't remember exactly but perhaps the shutter is kept open to
>>>>> complete the exposure. I had made a mental note that this could be a
>>>>> disaster if happened again but obviously forgot about it. In manual
>>>>> mode there is not a clue anthing is askew. Not sure how the FP mode
>>>>> works , but I sure won't ever forget to check the switch position. :-(
>>>>> I really dread picking up this batch but I was told some of the images
>>>>> with a potential TOPE shot were interesting. We'll see.
>>>>>
>>>>> Mike
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Wow! I don't think I've thought about the X/FP switch since 1976. :-)
>>>>>
>>>>> Chuck Norcutt
>>>>>
>>>>>
>>>>> Carlos J. Santisteban wrote:
>>>>>> Hi Mike and all,
>>>>>>
>>>>>>
>>>>>>> From: usher99@xxxxxxx
>>>>>>> Nothing fancy used either. OM-2 in manual with V283 on a bracket
>>>>> with
>>>>>>> remote cord on the usual yellow for use with F4.
>>>>>>>
>>>>>> You mean the 'plain' OM-2 -- not -n, not S? Then it could be the
>>>>> position of
>>>>>> the X/FP switch...
>>>>>>
>>>>>> All the best,
--
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