Because of its position relative to the lens elements the leaf shutter acts
rather like a rapidly opening and closing diaphragm. So, even when the
shutter is not fully open the film-plane is evenly illuminated. In fact,
some cameras exploit this feature by combining the shutter and diaphragm
into a single unit.
-----Original Message-----
From: owner-olympus@xxxxxxxxxxxxxxx [mailto:owner-olympus@xxxxxxxxxxxxxxx]
On Behalf Of Terry and Tracey
Sent: 01 October 1998 08:34
To: olympus@xxxxxxxxxxxxxxx
Subject: Re: [OM] Leaf shutter lens and fill flash
>><<Their last leaf-shutter SLR body -- the Topcon Unirex, had a fully
manual
>>shutter (B, 1 through 1/500 sec), a hot shoe, TTL averaging as well as
spot
>>metering, shutter priority AE, and more. Lenses were very good and very
>>cheap. Flash synchronization was available at all shutter speeds. >>
I've got a question about leaf shutters. I understand that the opening time
is fast enough to always have the the shutter fully open, so flash sync is
not a problem.
My question is "how does the shutter open". If it folows the same path on
opening as closing, the centre of the shot will receive more exposure than
the edges. I have never seen a picture of one slow motion to see it's
operation.
Foxy
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