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Re: Hyperfocal question

  • From: P3D William Carter <wc@xxxxxxxxxxxxxxxxxxx>
  • Subject: Re: Hyperfocal question
  • Date: Sun, 5 May 1996 04:28:30 -0700
Greg Erker wrote:
>   Do all MF's use the same COC value or does it depend on
> format (645, 6x6, 6x7 etc)?

John Bercovitz replies:

"Anyone interested in this might try the photo-3d archives at bobcat.
I'm sure this one's been discussed at length.  (Not that I remember 
the results.)"

To which I'll add:

It is my view, and hopefully everybody elses by now :-), that the DoF 
numbers are only relative. You need to know YOUR lens's resolution, YOUR 
film/processing resolution, the combined losses in YOUR display 
method, YOUR viewing distance, and YOUR acceptable limits of sharpness, 
in order for YOUR DoF numbers to have any other meaning.

-- 
         *** Note Change of Address ***
                wc@xxxxxxxxxxxx
    37deg 39.09'N x 122deg 29.56'W x 90'MLLW





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