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[OM] Re: A what f-stop do diffraction issues set in?

Subject: [OM] Re: A what f-stop do diffraction issues set in?
From: "James Royall" <jamesroyall@xxxxxxxxxxx>
Date: Tue, 18 Apr 2006 23:07:54 +0100



On Tue, 18 Apr 2006 17:44:36 -0400, "Chuck Norcutt"
<chucknorcutt@xxxxxxxxxxx> said:
> 
> If, as I guess, f/5.6 is somewhere near optimal for performance of the 
> 14-54 at 14mm you can focus at about 7 feet and get evertyhing from 3.5 
> feet to infinity in sharp focus.  

There's the rub with this lens; I would have to set focus somewhere
between 3 feet (1 meter) and infinity, which is only a few mm on the
scale. Good job there's lots of DOF to play with.

One site I found, and which doesn't seem to be working right now is
www.dofmaster.com - very good online calculator, with a pick list of
camera models / sensor sizes.

James
-- 
  James Royall
  jamesroyall@xxxxxxxxxxx

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