From: "Michael Georgoff (SAL-US)"
Guillermo,
You maniac! According to my calculations, a 15mm fl pinhole would need to
be = .0065 inches. Can you actually produce holes that small by hand? I
have trouble breaking the 10 thousanths barrier
Michael,
I actually made a 0.0045" tha
From: "Lee W. Potts"
I just started w/pinhole photography and I want to make a better
pinhole. For my first try I used aluminum from a pie plate. I'd
like to get brass shim stock, but all the auto supply places
around here have never heard of it. They look at me like I'm nuts
when I ask for it
From: "Rune Tallaksen"
Mount the pinhole sheet in a slideframe, place it in a slideprojector.
Then by measuring the distance from the pinhole in the slideframe and to
the
projector screen and the diameter of the projected pinhole on the screen,
by
means of a formula it was possible to fi
From: "Clayton Tume"
Reply-To: pinhole-discussion@p at ???
To:
Subject: Re: [pinhole-discussion] Re: Slit-apertures ?
Date: Sat, 2 Sep 2000 08:45:25 +1200
GuillermoI see you're making zoneplates again...am I too late to
order one for my Cirkut panorama camera? focal length is 2
Is your pinhole diameter .22 mm? .22 mm / 38 mm = 173, 38 mm is about
1.5 in. If its .22 inches then your F stop would be 6.8. I hope you
measured your pinhole diameter in the metric system.
This is the kind of stuff that made the Mars Climate Orbiter burn in Mars
atmosphere, some time ago!!
