----- Original Message ----- 
From: "Jens Bladt"
Subject: RE: Zone Focus - what is it?


> >Hyper focal distance nothing to do with zone focusing.
>
> Oh, it does. The HFD is the basic math behind defining the zones in
order to
> ensure overlapping DOF "between" them.

And if you start quoting mathmatical formulae, I am certain to
projective vomit over the north pole and into your back yard.

>From a user point of view, who doesn't take this to the level of
rocket science, zone focusing is not the same as hyper focal
focusing, since by definition, the hyperfocal distance involves
infinity, which zone focusing does not have to.

William Robb


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