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Re: [OM] Bryhn Chart method of F280

Subject: Re: [OM] Bryhn Chart method of F280
From: "Tom Trottier" <Tom@xxxxxxxxxxxxx>
Date: Wed, 1 May 2002 14:30:25 -0400
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--
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tOM Trottier,   ICQ:57647974    http://abacurial.com
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