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Re: [OM] F280 - angle of illumination

Subject: Re: [OM] F280 - angle of illumination
From: "Mickey Trageser" <mickeytr@xxxxxxxxxxxxxxx>
Date: Sun, 13 May 2001 12:39:20 -0400
Oh yeah, forgot to mention that I've had excellent results with the T32 and
24mm lens for indoor room lighting. The coverage was even. Any dropoff may
have been masked due to the ambient reflections in the 13' x 20' room. All
bets are off outdoors ;-)
Mickey
----- Original Message -----
From: "Mickey Trageser" <mickeytr@xxxxxxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Sunday, May 13, 2001 12:34 PM
Subject: Re: [OM] F280 - angle of illumination


> Hans- Thanks for the clarification. There's always something to learn....
>
> Mickey
> ----- Original Message -----
> From: "Hans van Veluwen" <hcvanveluwen@xxxxxxxxx>
> To: <olympus@xxxxxxxxxxxxxxx>
> Sent: Sunday, May 13, 2001 11:49 AM
> Subject: Re: [OM] F280 - angle of illumination
>
>
> >
> > : John- forget the 24, but try the 28. The flash covers 74 degrees while
> the
> > : 28mm covers 75 degrees. Depending on the subject, it could be ok. You
> can
> > : use a T-32 with the 24mm.
> >
> >
> > The T32 and F280 have identical coverage angles: 74 degrees horizontal,
53
> > degrees vertical.
> >
> > The 75 degrees you mention for the 28mm lens is correct, but this the
> *diagonal*
> > angle of view. Its horizontal a.o.v. is 64 degrees, its vertical a.o.v.
is
> 45
> > degrees.
> >
> > For the 24mm lens these data are 84 degrees diagonal, 74 degrees
> horizontal and
> > 53 degrees vertical. As you can see this is identical to the coverage
> angles of
> > both the T32 and F280.
> >
> >
> >
> > hnz
> >
> >
> >
> > < 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 >
> >
>
>
> < This message was delivered via the Olympus Mailing List >
> < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
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>


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