That's probably right. I was limiting my comments to 70's era consumer
grade rfs.
_________________________________
John Hermanson www.zuiko.com
Camtech, Olympus Sales & Service since 1977
21 South Lane, Huntington NY 11743-4714
631-424-2121 For Free Olympus manuals,
please call 1-800-221-3000
_________________________________
----- Original Message -----
From: "Keith Whaley" <keith_w@xxxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Monday, December 09, 2002 1:14 PM
Subject: Re: [OM] Oly SP vs. Oly RD [was Re: OM vs. Leica]
>
>
> Winsor Crosby wrote:
> >
> > On Monday, December 9, 2002, at 05:57 AM, John Hermanson wrote:
> >
> > > Most leaf shutters , though, top out at 1/350th at best (even when the
> > > dial
> > > says 1/500) Blades simply can't move that fast.
> > > _________________________________
> > > John Hermanson www.zuiko.com
> > > Camtech, Olympus Sales & Service since 1977
> > >
> >
> > In addition, most, because of their design, will darken corners at the
> > higher speeds.
>
> Modern shuter designs have mostly overcome that by their odd shapes,
> that almost instantly open up full radius as they begin opening. There
> are some marvelous shutter blade designs out there, undoubtedly
> prompted by the characteristic you mention.
>
> > Part of the genius of the focal plane shutter was it
> > evenness of illumination.
>
> For non-moving subjects...
> The faster the subject moves, the more odd shaped it becomes. But,
> it's evenly illuminated! <smile>
>
> keith whaley
>
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>
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