Digital BW, The Print

The highest quality lenses at 1:1 that I've seen tests for are Printing
Nikkors, but they're very expensive.  The 1x Rodagon D does very well, but
the cheap 55mm Nikkor does a very good job.  My only lens that's clearly
better is a Mitutoyo APO 2x.

Even manually tiling 6x7 negatives is very easy with a jig.  It only takes
me about 2 minutes, and then there's a little time in software.

On Fri, Jul 20, 2012 at 12:00 PM, Paul <roark.paul@...> wrote:

> **
>
>
> When I was doing my internegatives, I found the MTF to be a huge problem.
> Even the best -- see the Apo-Rodagon D at the bottom of
> http://www.rodenstock-photo.com/mediabase/original/e_Rodenstock_Printing_CCD_43-62__8230.pdf-- has a fair loss. At 1:1 your f8 diffraction limit is like f16. So, you
> want to use these fairly wide open. Then, particularly with a stepper
> setup, you'd be fighting light falloff.
>
> The stepper idea is interesting, but I'd think you'd want a telephoto
> optic. Looks like lots of work.
>
> Paul
> www.PaulRoark.com
>
>  
>


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