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[OM] Re: A flash and meter lesson learned

Subject: [OM] Re: A flash and meter lesson learned
From: Joel Wilcox <jfwilcox@xxxxxxxxx>
Date: Tue, 24 Jan 2006 14:49:51 -0600
On 1/24/06, Andreas Pirner <AndreasPirner@xxxxxx> wrote:
>
> Joel Wilcox wrote:
> > Thanks Chuck. I had read somewhere that electronic flash is about
> > 1/40,000 sec.  I never would have discovered what you came up with.
>
> 1/40,000 sec. is pretty much the shortest flash
> duration that occurs when the flash is very close,
> lens wide open and not diffusion of any kind.
> I guess it is determined by regulating/measuring
> electronics, the behaviour of the flash tube itself
> (it 'burns' in a curve too, pretty steep flanks,
> but still a curve, kinda tailing off).
> The longest flash duration is full power of a
> single head high power studio flash. That may
> comes close to 1/200 sec. (as already stated
> in another post).
>
> Andreas

Probably what I read was that a flash could be "as short as 1/40,000
sec duration."  I think I read this in conjunction with an article
about how the F280 works and how it differs from a conventional flash
unit.  A fact, but a misleading fact in my case.

Thanks,
Joel
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