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Re: [OM] Silicon film-email them!!

Subject: Re: [OM] Silicon film-email them!!
From: Tom@xxxxxxxxxxxxx
Date: Mon, 23 Sep 2002 01:41:04 -0400
I think the CCD can start and stop by itself, so 1/60 for 1/60 and shorter 
(wow, full flash sync!) and longer for longer.

tOM

On Sunday, September 22, 2002 at 10:33, Chuck Norcutt 
<olympus@xxxxxxxxxxxxxxx>
wrote re "[OM] Silicon film-email them!!" saying:

> In all the discussion of the probability and/or suitability of a digital 
> back for our OM's no one has yet mentioned the problem of OTF light 
> measurement for auto exposure control.  I don't know what the roll-over 
> point is between measuring off-the-curtain and off-the-film but I'm 
> pretty sure we're there by 1/60th of a second.  So, unless the silicon 
> surface just happens to be pretty close to film in reflectivity there 
> would be exposure error for most slow speeds including all auto flash work.
> 
> Perhaps it can all be compensated for by dialing in a compensating ISO 
> level.  However, that assumes there is at least enough reflection from 
> the silicon to avoid problems with meter sensitivity.
--
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tOM Trottier,   ICQ:57647974    http://abacurial.com
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