That is very interesting. Does the digital sensor record the shorter
light wavelengths? I thought they were filtered out similar to IR unless
the camera was converted to full spectrum. At any rate - some very cool
effects and interesting OOF areas.
Mark
On 2/25/2013 4:02 AM, Jostein Øksne
- Original Message -
From: Bruce Walker bruce.wal...@gmail.com
I like those, especially the third.
There's no chance of residual radiation on that thing is there?
Thanks Bruce.
I believe all the x-ray photons have left the glass a long time ago. :-)
Are you thinking about
- Original Message -
From: Don Guthrie shark50...@gmail.com
Still not sure what the technic is. Kinda cool tho.
Thanks Don.
Put it down to my poor explanation.
It's a rather geekish project to begin with. Maybe I shouldn't pester the
list with too many details, but I'm happy to
- Original Message -
From: Aahz Maruch a...@pobox.com
The daisies look really sharp, though it's hard to be sure with a small
image.
It is a very sharp lens, but it's not particularly well corrected (ie. it's
not APO). You can see for yourself if you like in this full jpg of a
- Original Message -
From: Daniel J. Matyola danmaty...@gmail.com
Quite interesting!
Thanks Dan! :-)
Jostein
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- Original Message -
From: Ann Sanfedele ann...@nyc.rr.com
I really like that first one... like a Turneresque painting and nice
geometry too.
Not crazy about the other two... looks like you're having fun :-)
I'm having a lot of fun with this. :-)
I agree on your pick, there's
On Mon, Feb 25, 2013 at 3:41 AM, Jostein Øksne p...@alunfoto.no wrote:
- Original Message - From: Bruce Walker bruce.wal...@gmail.com
I like those, especially the third.
There's no chance of residual radiation on that thing is there?
Thanks Bruce.
I believe all the x-ray photons
On Mon, Feb 25, 2013, Jostein ?ksne wrote:
- Original Message - From: Aahz Maruch a...@pobox.com
The daisies look really sharp, though it's hard to be sure with a small
image.
Btw, I made a GIF animation of the DOF from full opening to f/22, if
anyone's interested.
http://www.alunfoto.no/temp/heligontest/index.html
I have purchased an old optic from an X-ray machine, a Rodenstock 100mm
f/1.6.
First I tried it on the 645D, just holding it before the bayonet to see if
there was any vignetting. There wasn't! So the image circle is quite decent.
The image
Simpleviewer requires flash. Can't see the gallery on my iPad. : (
-p
Sent from my iPad
On Feb 24, 2013, at 10:25 AM, Jostein Øksne p...@alunfoto.no wrote:
http://www.alunfoto.no/temp/heligontest/index.html
I have purchased an old optic from an X-ray machine, a Rodenstock 100mm f/1.6.
- Original Message -
From: Paul Sorenson pentax1...@gmail.com
Simpleviewer requires flash. Can't see the gallery on my iPad. : (
Try this then:
http://www.alunfoto.no/temp/heligon2/index.html
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I really like that first one... like a Turneresque painting and nice
geometry too.
Not crazy about the other two... looks like you're having fun :-)
ann
On 2/24/2013 11:25, Jostein Øksne wrote:
http://www.alunfoto.no/temp/heligontest/index.html
I have purchased an old optic from an X-ray
I like those, especially the third.
There's no chance of residual radiation on that thing is there?
On Sun, Feb 24, 2013 at 11:25 AM, Jostein Øksne p...@alunfoto.no wrote:
http://www.alunfoto.no/temp/heligontest/index.html
I have purchased an old optic from an X-ray machine, a Rodenstock
Still not sure what the technic is. Kinda cool tho.
pdml-requ...@pdml.net wrote:
Message: 1
Date: Sun, 24 Feb 2013 21:16:33 +0100
From: Jostein ?ksnep...@alunfoto.no
To: Pentax-Discuss Mail Listpdml@pdml.net
Subject: Re: GESO - Experiments with X-ray optics
Message-ID
On Sun, Feb 24, 2013, Jostein ?ksne wrote:
http://www.alunfoto.no/temp/heligontest/index.html
Then I scavenged an old and broken Pentax-A 50mm f/1.7. I picked out
all the optical elements and mounted the Rodenstock into the
focusing helicoid using generous amounts of gaffatape. The other
Quite interesting!
Dan Matyola
http://www.pentaxphotogallery.com/danieljmatyola
On Sun, Feb 24, 2013 at 11:25 AM, Jostein Øksne p...@alunfoto.no wrote:
http://www.alunfoto.no/temp/heligontest/index.html
I have purchased an old optic from an X-ray machine, a Rodenstock 100mm
f/1.6.
First I
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