P3D TechPan 4x5?

[John Toeppen <toeppen@xxxxxxxx>]

"Better yet,  shoot for 4x5 transparencies to begin with.  Tech Pan is
available in sheet film.   Duping an image, even going to a larger film
size, is never going to give the resolution you can get from the
original"

My suggestion of shooting it in 35mm is driven by the ease of using a
Realist and the cost of film.  This also allows you to shoot a few and
select the best.  4x5 cameras don't travel easily. I have done some
contact printing of holograms using sun light at 1500 lp/mm.  TechPan
will do 5-600 lp/mm.  Since my vision fails to resolve anything smaller
than 25 microns (20 lp/mm)I would fail to see the difference in the
final image. Remember that the f64 club got 50 micron spots - 10 lp/mm
in a contact print!  An f8 enlarging lens should do 5 micon spots and
100lp/mm, far better than we can see - if properly done.

John Toeppen