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[OM] Re: TTL fill-in flash for OM

Subject: [OM] Re: TTL fill-in flash for OM
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Tue, 27 Sep 2005 16:53:34 -0400
USHER99@xxxxxxx wrote:

> The overflash technique may come in handy anyway. I saved it on my laptop and 
> have a hard copy.
>   Looks like non TTl-auto with ND filters is the only way with my OM-2.  
> Just for clarification with ND filters---the thyristor on the flash---(283 or 
> T20) does not have a filter so I would assume that if I wanted 2 stops less 
> from the flash as fill with a 2 stop ND, I would set the flash as if needed 
> to 
> provide 100% of the light???  The max flash to subject distance would be 
> calculated with the original aperture pre-ND filter.  This seems to be a 
> confusing 
> area.  Thanks for the re-clarification to those newer to the area.
> Mike G
-----------------------------------------

Correct, but you can simplify your life by changing the ISO setting on 
the flash to compensate for the ND.  If you have a 2 stop ND installed 
and are shooting ISO 100 then cut the ISO (on the flash only) to 25. 
Now you can just dial your 2 stop lower fill flash directly on the 
f-stop dial... or, crank the ISO dial back where you stated.  :-)

Chuck Norcutt


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