FP fires when mirror goes up, I think delay is 10-15 ms before first
curtain opens. Varies slightly from camera to camera but okay if it's
withing a certain range. Bulb duration about 1/30th? Never thought of
this before, I don't know if auto otf will work with this.
___________________________________
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
On 10/25/2010 6:36 PM, usher99@xxxxxxx wrote:
> I am positive a listee can answer this. I have also heard the Dr.
> Flash's long lost Great Uncle, Dr. F. Bulb, has also recently relocated
> from New England to NY state as to be closer to his nephew.
>
> I did find a stash of GE Blue #6 flashbulbs at my Mom's the other day.
> Still looking for the Big Berthas.
> I have a bracket with 7" reflector--might be trouble mounting an OM
> though. I have an odd ball adapter that provides a FB bayonet
> mount for a standard light bulb type of screw mount---may plug into a
> lamp loaded with a FB for extra effect.
>
>
> I am thinking that these FB's hooked up to the PC terminal on FP on an
> OM-2 and the cam in auto,might constitute
> a TTL type of metering as the shutter would just serve
> to limit the light in lieu of a quench signal. I think that mode
> triggers the flash 20msec or so prior to the first curtain and it is
> such a long burn I think that syncing at most speeds shouldn't be an
> issue.
>
> I have seen a poor scan of the light output curve of the GE #6 and it
> seems to reach peak in about 30msec.
> It should be way fired up by the first curtain. The shutter speed does
> alter the GN, but not in a linear fashion like the F280
> as pointed out by Tim. So, will it work on auto????????
>
> If so, pretty cool--Flash not sufficient it justs drags the shutter to
> fill in with ambient.
> Too much flash---just a quicker shutter---even OK at faster then
> 1/60th- assuming it will do that on auto and not just fire at 1/60th
> with something plugged into the PC connection. Better get this right
> early on--I see replacements are (gulp) $60.00 a dozen on
> Flashbulbs.com.
>
> All Fired Up, Ready to get in Sync, Mike
--
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