Guillermo - great idea and nice documentation on the method!
Gregg
At 10:05 PM 9/12/00 -0400, you wrote:
Hello all,
I just finished a small article on measuring pinholes by
using a scanner,
here is a link to it: http://members.home.com/penate/diameter.html
Guillermo
Hello all,
I just finished a small article on measuring pinholes by
using a scanner,
here is a link to it: http://members.home.com/penate/diameter.html
Guillermo
--- G.Penate pen...@home.com wrote:
Probably some of you are already doing the following, but it just occurred
to me that a flat bed scanner can also be used to measure pinhole diameters.
I just measured succesfuly a 0.012 pinhole diameter. My scanner is an El
Cheappo UMAX scanner $60 and it
- Original Message -
From: Mike Keller mike.kel...@wvculture.org
I tried that but wasn't sure I did it right. Care to elaborate on how you
measured?
Sure, here is what you should do: Set your scanning to the highest optical
resolution (1200 in my case), scan the pinhole and then scan a
What a dam... good idea!!!
thanks
andy
-Original Message-
From: pinhole-discussion-admin@p at ???
[mailto:pinhole-discussion-admin@p at ???]On Behalf Of G.Penate
Sent: Tuesday, September 12, 2000 1:30 PM
To: pinhole-discussion@p at ???
Subject: Re: [pinhole-discussion] where 2
I tried that but wasn't sure I did it right. Care to elaborate on how you
measured?
Michael Keller
|-Original Message-
|From: G.Penate [mailto:pen...@home.com]
|Sent: Tuesday, September 12, 2000 1:30 PM
|To: pinhole-discussion@p at ???
|Subject: Re: [pinhole-discussion] where 2
Probably some of you are already doing the following, but it just occurred
to me that a flat bed scanner can also be used to measure pinhole diameters.
I just measured succesfuly a 0.012 pinhole diameter. My scanner is an El
Cheappo UMAX scanner $60 and it was enough to do the job.
Guillermo
In a message dated 9/12/00 11:58:35 AM, pen...@home.com writes:
I get my needles from The Dollar store and they are very consistent from
where the tapering of tip starts to about where the needle's eye is (not that
it matters to me, tho, as I measure my pinholes and zone plates with a
By chance, I photographed a needle and projected it,
only to find it had 2 different angles of taper and
the diameter was different everywhere along the length
of the needle! Checked a lot more needles and found the
same thing. The question: where on the needle does the
diameter from the
On Tue, Sep 12, 2000, Kosinski Family wrote:
Pinhole wizards,
By chance, I photographed a needle and projected it, only to
find it had 2 different angles of taper and the diameter was
different everywhere along the length of the needle! Checked a
lot more needles and found the same
On Tue, Sep 12, 2000, Kosinski Family wrote:
Pinhole wizards,
By chance, I photographed a needle and projected it, only to
find it had 2 different angles of taper and the diameter was
different everywhere along the length of the needle! Checked a
lot more needles and found the same thing. The
Pinhole wizards,
By chance, I photographed a needle and projected it, only to find it had 2
different angles of taper and the diameter was different everywhere along the
length of the needle! Checked a lot more needles and found the same thing. The
question: where on the needle does the
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