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[OM] Re: Solution for slow synch speed for OM2 with fill-in flash

Subject: [OM] Re: Solution for slow synch speed for OM2 with fill-in flash
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Wed, 10 Aug 2005 15:17:54 -0400

Chuck Norcutt wrote:
> usher99@xxxxxxx wrote:
> 
>>Wondered what people do with bright light where there are harsh shadows with 
>>OM-2.  Do neutral density filters work OK for this problem??  I usually only 
>>lug around the small T20 flash.  With 400 film at max speed of 1/60 there is 
>>not much leeway.  Thanks for any suggestions.
-----------------------------------

I forgot to consider the requisite flash power in my last answer. 
Recall that at ISO 100 and 1/60th second you need an f/22 exposure.  If 
the fill flash is allowed to be as far as 2 stops down the flash needs 
to operate as thought he exposure is f/11.  Since the guide number on 
the T-20 at ISO 100 is only 20 meters then your shooting distance is a 
maximum of 20/11 = 1.8 meters.  A T-32 will get you out to almost 3 
meters.  On the other hand I'd really like to have less than a 2 stop 
differential so even the T-32 is somewhat limited here.

Chuck Norcutt


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