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[OM] Re: focusing question

Subject: [OM] Re: focusing question
From: Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx>
Date: Wed, 28 Mar 2007 16:29:57 -0400
Yes, follow Piers' advice immediately.  With the ND4 you're losing two 
stops (1/4 of the light) from f/8 so it's as though you're trying to 
focus at f/16.  It's amazing that you can see anything.

Chuck Norcutt

Piers Hemy wrote:
> If I understood you correctly, Scott, you have a ND4 filter permanently on
> your 600/8 lens.  That being the case it isn't surprising that you are
> having difficulty focusing, especially on the half-size E-500 screen.  I
> don't think I would be able to focus that on an OM screen - in fact, I think
> I might nit be able to frame the subject, let alone focus.
> 
> Suggestion #1 - take off the ND filter.  Don't worry that you don't have a
> plain glass to replace it, because I reckon the degradation that might
> result will be much preferable to the out of focus results you are presently
> "enjoying".
> 
> Suggestion #2 - if the above doesn't suit, or doesn't get the results
> needed, get hold of a large searchlight as a focusing aid ;-)

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