Archived posting to the Leica Users Group, 2005/06/28

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Subject: [Leica] new Puts article
From: abridge at gmail.com (Adam Bridge)
Date: Tue Jun 28 13:16:18 2005
References: <001001c57926$037b5660$6452c33e@symke> <65280FBD-D7D0-4458-AEEC-1931718FBA6D@btinternet.com> <9b678e050625054040fb9bc9@mail.gmail.com> <42BD59D7.7000409@arbos.net> <42BD6293.4000507@adrenaline.com> <13786F32-A906-4316-9F77-37E76DE5BB7B@earthlink.net> <4cfa589b0506251001a82d9b@mail.gmail.com> <9106DC64-0114-4457-9052-C94A20A8651F@earthlink.net> <p06210201bee5ec472346@10.4.1.193>

I don't understand this, Henning. 

It seems to me that the depth of field is solely a fuction of the
geometry of the lens/film system. That the print and enlargement has
nothing to do with it.

If I took an R8 with a 50 shot wide open at f1.4 I'd get some depth of
field. I replace the back with the DMR. Same shot. Same depth of field
but cropped.

So then I open the images on photoshop and look at them. How does the
depth of field change?

So I'm confused but I could certainly be enlightened! :)

Adam

On 6/27/05, Henning Wulff <henningw@archiphoto.com> wrote:
> Since the image of the 50 on APS has to be enlarged more, the final
> CoC on the print will be larger, so that, conversely, means that the
> DOF of a 50 at any given f-stop will be less for a same size print
> than the DOF on a full size sensor/film.
> 
> --
>     *            Henning J. Wulff


Replies: Reply from henningw at archiphoto.com (Henning Wulff) ([Leica] new Puts article)
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