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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: Chuck Norcutt <chucknorcutt@xxxxxxxxxxx>
Date: Tue, 18 Apr 2006 19:27:29 -0400
Just forget the scale and focus on something 7 feet away.

Chuck Norcutt

James Royall wrote:
> 
> 
> 
> 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


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