It's especially used in zooms, but the 24 shift also has one.
Tom
On Sunday, June 30, 2002 at 11:38, Jim Brokaw <olympus@xxxxxxxxxxxxxxx>
wrote re "Re: [OM] Re: Lens Shade Shapes" saying:
> on 6/29/02 4:50 PM, Dave Dougherty at davdou@xxxxxxxxxx wrote:
>
> > Why is the lens shade "petal" shaped (for want of a better term) on the
> > E-10/E-20 and many other higher end cameres? Is it just to look sexy or
> > does the shape have some real function?
> >
> > Dave Dougherty
>
> That shape is what's left if you cut a projected rectangle away from a
> cylinder... its called the 'ideal' shade because in theory it is as close as
> you can come to the image-forming light rays without blocking any of them.
> So it should block as much extraneous light as is possible without
> vignetting.
> --
>
> Jim Brokaw
> OM-1's, -2's, -4's, (no -3's yet) and no OM-oney...
>
>
> < This message was delivered via the Olympus Mailing List >
> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
>
>
--
--------- http://groups.yahoo.com/group/Olympus-Documentation
--------- http://groups.yahoo.com/group/ottawa-photo-clubs
tOM Trottier, ICQ:57647974 http://abacurial.com
758 Albert St, Ottawa ON Canada K1R 7V8
+1 613 860-6633 fax:231-6115 N45.412 W75.714
"The moment one gives close attention to anything,
even a blade of grass, it becomes a mysterious,
awesome, indescribably magnificent world in itself --
Henry Miller, 1891-1980
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|