Archived posting to the Leica Users Group, 2001/02/07

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Subject: [Leica] Re: DOF, thanks Austin
From: Jim Brick <>
Date: Wed, 07 Feb 2001 21:59:00 -0800

>> > The DOF of both the 8x10 and the 6x7 images are exactly the same. Same
>> > image size. Same lens. Same aperture. But the 8x10 obviously has more
>> > coverage. But the same image size. Hence the same DOF.
>> The issue is the magnification not the film format. Your discussion of DOF
>> seems to imply that you think DOF exists on a neg or tranny independent of
>> the magnification it is viewed at. Did I misunderstand you on this?
At 09:48 PM 2/7/01 -0500, wrote:

>I believe you are 'confusing' DOF on the film with DOF on the printed
image at viewed distance.  They are different.  Even on the print, then
again at viewed distance have different 'DOF' too.  I believe I posted
previously on this, and why.

Thank you Austin...