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Glacue
Joined: 22 Mar 2014 Posts: 2
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Posted: Sat Mar 22, 2014 5:49 pm Post subject: lens from Xray |
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Glacue wrote:
Hi! what do you think about this lens? Apparently this is lens from an old Xray machine. But I dont know company . . Maybe you know. Want to sell but don't know the true cost of this stuff.
http://forum.mflenses.com/userpix/20143/big_7988_DSC00254_2.jpg
Last edited by Glacue on Sat Mar 22, 2014 5:55 pm; edited 1 time in total |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1574 Location: Sweden
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Posted: Sat Mar 22, 2014 5:55 pm Post subject: Re: lens from Xray |
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blotafton wrote:
Glacue wrote: |
Hi! what do you think about this lens? Apparently this is lens from an old Xray machine. But I dont know company . . Maybe you know. Want to sell but don't know the true cost of this stuff.
![](http://forum.mflenses.com/userpix/20143/7988_DSC00258_2.jpg) |
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kds315*
![Level 4 Level 4](rating4.gif) Joined: 12 Mar 2008 Posts: 16591 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sat Mar 22, 2014 8:18 pm Post subject: |
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kds315* wrote:
Cost (new price once) is one thing, current market price is another. Xray lenses are extremely hard to use as they were computed that the film they were projecting to basically touched the rear lens element, which today makes them nearly impossible to use (except for very closeup macro). I have many such lenses but hardly can use them. _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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iangreenhalgh1
![Level 4 Level 4](rating4.gif) Joined: 18 Mar 2011 Posts: 15679
Expire: 2014-01-07
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Posted: Sun Mar 23, 2014 1:56 am Post subject: |
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iangreenhalgh1 wrote:
It would probably be awesome at burning ants or starting fires by sunlight. ![Smile](images/smiles/icon_smile.gif) _________________ I don't care who designed it, who made it or what country it comes from - I just enjoy using it! |
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kds315*
![Level 4 Level 4](rating4.gif) Joined: 12 Mar 2008 Posts: 16591 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sun Mar 23, 2014 2:00 am Post subject: |
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kds315* wrote:
Yep, or stopping doors from getting thrown close by wind ![Wink](images/smiles/icon_wink.gif) _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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ZoneV
![Level 3 Level 3](rating3.gif) Joined: 09 Nov 2009 Posts: 1632 Location: Germany
Expire: 2011-12-02
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Posted: Sun Mar 23, 2014 3:11 pm Post subject: |
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ZoneV wrote:
Impressive lens! _________________ Camera modification, repair and DIY - some links to look through: http://www.4photos.de/camera-diy/index-en.html
I AM A LENS NERD!
Epis, Elmaron, Emerald, Ernostar, Helioplan and Heidosmat.
Epiotar, Kameraobjektiv, Anastigmat, Epis, Meganast, Magnagon, Quinar, Culmigon, Novotrinast, Novflexar, Colorplan, Sekor, Kinon, Talon, Telemegor, Xenon, Xenar, Ultra, Ultra Star. Tessar, Janar, Visionar, Kiptar, Kipronar and Rotelar.
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calvin83
![Level 4 Level 4](rating4.gif) Joined: 12 Apr 2009 Posts: 7555 Location: Hong Kong
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Posted: Sun Mar 23, 2014 3:51 pm Post subject: |
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calvin83 wrote:
It will be a good candidate for competition like the lens with largest front element within 135mm. ![Smile](images/smiles/icon_smile.gif) _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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kryss
![Level 3 Level 3](rating3.gif) Joined: 13 Sep 2009 Posts: 2169 Location: Canada
Expire: 2017-09-18
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Posted: Sun Mar 23, 2014 4:46 pm Post subject: |
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kryss wrote:
Interested to know what it weighs?? _________________ Do not trust Atoms....they make up everything. |
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danfromm
![Level 3 Level 3](rating3.gif) Joined: 04 Sep 2011 Posts: 577
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Posted: Sun Mar 23, 2014 5:06 pm Post subject: |
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danfromm wrote:
In his book The Photographic Lens (1968, Focal Press, London, New York. Originally published as Das Photo Objektiv, 1956, Friedr. Vieweg & Sohn Verlag, Braunschweig), Hans Martin Brandt explains that lenses such as Rodenstock's XR Heligons and TV Heligons were used in pairs for
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presentation of the image formed on an X-ray amplifier tube screen to a larger audience via a television system. Conventional optical systems cannot satisfactorily project these images onto the photo cathode of a television picture tube and special optical designs are required for this purpose. …
While it would go beyond our scope to go into this specific application in exhaustive detail, the optical transmission of an anode image to a television system requires so-called tandem lenses. These are a combination of two lenses optimally corrected for infinity. They are arranged in such a way that the anode image is in the focal plane of the first lens, while the photo cathode tube of the television camera tube is in the focal plane of the second lens. …
In the first place this relay optical system must have the largest possible aperture. On the other hand geometric image corrections must be brought to an optimum …
Rodenstock suggest a number of their lenses as suitable for such tandem combinations. Recommended systems for the lens facing the X-ray image tube are the 100 mm Kinemar f/1.5, the 75 mm XR Heligon f/1.1 or the 50 mm XR Heligon f/0.75. The second lens for projection onto the final image plane can be a 32 mm Heligon f/1.3 (for 16 mm narrow gauge cine), the 70 mm Heligon f/1.4 (for standard 35 mm cine cameras) or the 50 mm TV Heligon f/0.75 for Vidicon cameras. |
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Glacue
Joined: 22 Mar 2014 Posts: 2
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Posted: Sun Mar 23, 2014 7:43 pm Post subject: |
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Glacue wrote:
kryss wrote: |
Interested to know what it weighs?? |
About 10 kg |
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kryss
![Level 3 Level 3](rating3.gif) Joined: 13 Sep 2009 Posts: 2169 Location: Canada
Expire: 2017-09-18
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Posted: Mon Mar 24, 2014 2:17 pm Post subject: |
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kryss wrote:
Would have to obtain mortgage to pay for shipping. _________________ Do not trust Atoms....they make up everything. |
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CuriousOne
![Level 3 Level 3](rating3.gif) Joined: 31 Dec 2013 Posts: 669 Location: Home
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Posted: Mon Mar 24, 2014 5:26 pm Post subject: |
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CuriousOne wrote:
Depending on construction of lens, sometimes it is possible to shift internal elements to increase the register distance, usually at cost of speed and getting some magnification increase. _________________ I have nothing to compensate with lens |
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kds315*
![Level 4 Level 4](rating4.gif) Joined: 12 Mar 2008 Posts: 16591 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Mon Mar 24, 2014 6:00 pm Post subject: |
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kds315* wrote:
...and at cost of sharpness/image definition as it is no longer as computed. _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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CuriousOne
![Level 3 Level 3](rating3.gif) Joined: 31 Dec 2013 Posts: 669 Location: Home
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Posted: Tue Mar 25, 2014 7:04 am Post subject: |
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CuriousOne wrote:
As said, it depends.
It's all on your knowledge.
If you move a lens from a group, sure you will get sharpness decrease, CA, vignetting and so on. But if you move complete group, you might only marginal decrease in image quality, but up to 20-30% increase in register distance, which often might be the key factor for lens adaptation. _________________ I have nothing to compensate with lens |
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