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valjo
Joined: 10 Oct 2008 Posts: 68 Location: Bulgaria
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Posted: Fri Jan 16, 2015 4:52 pm Post subject: Part of which unknown lens? |
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valjo wrote:
This part has a mirror at the bottom, facing inside the lens.
On the other side of the mirror there is an inscription:
FAX ROKKOR F4.5/150mm
_________________ Canon D60
3.5/135 Jupiter 37A |
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ZoneV
Joined: 09 Nov 2009 Posts: 1632 Location: Germany
Expire: 2011-12-02
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Posted: Fri Jan 16, 2015 7:20 pm Post subject: |
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ZoneV wrote:
This is not a part of a lens, but the complete lens.
With the mirror the image is reflected back through the lens, and so the lens is kind of doubled! _________________ 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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valjo
Joined: 10 Oct 2008 Posts: 68 Location: Bulgaria
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Posted: Fri Feb 13, 2015 11:35 am Post subject: |
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valjo wrote:
ZoneV wrote: |
This is not a part of a lens, but the complete lens.
With the mirror the image is reflected back through the lens, and so the lens is kind of doubled! |
i don`t believe this is complete lens
Maybe this is part of a mirror lens? _________________ Canon D60
3.5/135 Jupiter 37A |
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Lightshow
Joined: 04 Nov 2011 Posts: 3666 Location: Calgary
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Posted: Fri Feb 13, 2015 4:26 pm Post subject: |
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Lightshow wrote:
As far as I can tell, it was never designed for photography, but is a technical lens used possibly in scanning, I don't know if the mirror part is removable.
It is most definitely not from a photography "mirror lens". _________________ A Manual Focus Junky...
One photographers junk lens is an artists favorite tool.
My lens list
http://www.flickr.com/photos/lightshow-photography/ |
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visualopsins
Joined: 05 Mar 2009 Posts: 10960 Location: California
Expire: 2025-04-11
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Posted: Fri Feb 13, 2015 6:06 pm Post subject: |
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visualopsins wrote:
You know what is FAX machine? Old technology for sending documents over phone land lines. Look in wikipedia.
The lens is from FAX machine. In first photo I would unscrew that ring -- the mirror might be removed. If so, you will have a 4.5/150 for use with bellows. _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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Lloydy
Joined: 02 Sep 2009 Posts: 7787 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Fri Feb 13, 2015 6:44 pm Post subject: |
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Lloydy wrote:
The mirror was probably for setting the focus in the machine, then removed for use. _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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ZoneV
Joined: 09 Nov 2009 Posts: 1632 Location: Germany
Expire: 2011-12-02
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Posted: Sun Feb 15, 2015 11:35 am Post subject: |
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ZoneV wrote:
"Applied Photographics Optics" by Sidney F. Ray:
p.378 / 41.3.1 Electrophotography
"..A novel approach in office copiers is the use of a catdioprtric lenses formed from one half of a symmetrical lens plus a miror. The symmetry of the optical layout allows the half-lens to have a dual imaging role, and costs are reduced."
For such applications is is possible to make very simple lenses. Only the half of a lens needed -> half cost for lenses and manufacturing + a plane surface mirror.
For pure refractive work without the mirror the lens will be bad - relative to that what it is with the mirror and use of designed distances. _________________ 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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