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Re: [OM] DoF Compared

Subject: Re: [OM] DoF Compared
From: Joel Wilcox <jfwilcox@xxxxxxxxx>
Date: Tue, 10 Aug 2010 14:39:36 -0500
On Tue, Aug 10, 2010 at 12:09 PM, Chuck Norcutt
<chucknorcutt@xxxxxxxxxxxxxxxx> wrote:
> All of your rebuttal has nothing to do with my argument which I
> apparently didn't explain well enough.  My point is simply that, at 5
> meters, the depth of field at f/3.2 is sufficient that you can't
> guarantee (even using a magnified image) that you were focused on the
> same spot as the Zuiko.  Even assuming a much tighter CoC, it would be
> quite easy to focus beyond that point without being able to tell you had
> done it.

Getting the exact point of focus is a trivial feat with Live View when
the 10x view is used.  OK, it depends to some degree on the *point*
used (a line or an edge is best), but it's not subject to rational
doubt most of the time.  That's why it is so useful.

Joel W.
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