On Wednesday, May 01, 2002 at 13:13, Thomas Bryhn
<olympus@xxxxxxxxxxxxxxx>
wrote re "Re: [OM] Bryhn Chart method of F280" saying:
> At 00:23 01.05.02, Tom Trottier wrote:
> >Why underexpose on auto?
>
> Short answer: Don't underexpose on auto. If you use print film you can use
> my chart as a rough distance guide and let auto do it's thing, but don't
> blame me later.
>
> Long answer: The point of this chart is to *meter*, *set manually*, and
> have a *predictable outcome* (See "Suggested use...". I'm sure there are
> other ways to utilize this chart, but as always, you do so at you own risk,
> auto or not.)
> F280 will add light to the scene, so in auto there's no simple way to
> predict what the camera will decide is enough exposure, as it will depend
> on how much of your subject fills the frame and how bright it is compared
> to the background. Neither can you decide and set the fill-in-ratio without
> first (spot)metering the subject, so generally auto is pretty useless if
> absolute predictability is what you're after.
I disagree. I suggest the ratio is always set by the flash-subject
distance, since the flash amount is constant.
tOM--
--------- http://groups.yahoo.com/group/Olympus-Documentation
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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
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