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hinnerker
Joined: 17 Aug 2009 Posts: 929 Location: Germany near Kiel
Expire: 2015-08-09
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Posted: Fri Aug 16, 2013 4:01 pm Post subject: Meopta Meostigmat 1/70mm conversion for Sony NEX |
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hinnerker wrote:
Only for showing an exotic conversion... did that just "for fun"...
and because there is a new Thread for Meopta Meostigmat 1.4/70mm and i love "fast lenses"...
http://forum.mflenses.com/meopta-meostigmat-70mm-f-1-4-adapted-on-gh1-t60854.html
http://forum.mflenses.com/meopta-meostigmat-1-4-70-on-ff-and-nex-via-vnex-t55218,highlight,%2Bmeopta.html
The Meopta Meostigmat 1/70mm... is a very huge and heavy (550g) beast.
With its diameter of 52,5mm on the end of tube, the rear lens cant intrude into the camera housing of a Sony NEX cam (Nex adaptors do have only 41,5mm in diameter!)... but this is neccessary because of the necessary register - distance for the infinity point rear lens must be at about 19mm away from the sensor.
How can we find a way to bring the lens to Sony NEX with an option to fokus from infinity to a good close distance?
Seems nearly impossible in first moment...
But Step by Step:
This is the "Beast"...
Without the modification shown in this article, the lens unfortunately can reach only 70mm on a Sony NEX as her max. distance (free lensing test).. not better. The lens has f1.0 an intersting speed ! So it makes sense to think about a way to convert the lens... and i did find a way for myself!
First i disassembled the whole lens, to look for the space between the lenses and the inner structure to figure out, if there is a way to shorten the total lenght of the tubus and to separate.
The rear lens has a diamteter of 36,8mm... so she will intrude in the 41.5mm diameter of camera mount, if separeted from Tubus and shorten the Tubus a bit.
Luckily i do have some experimental parts of the VNEX System by hand... especially a small helicoid (12-threads) which could fit for the job...
(developed for the use in a VNEX LTM to NEX "Zebra" - adaptor)
So the idea was, to prepare the moving part of the Helicoid to place the rear lens into it and give her the ability to move back and forwards..
And after the work is done the 36,8mm diameter of the rear lens fits perfect into the moving part of the Helicoid...
So now we are able to fokus the rear lens... and in the next step we have to find a construction to combine the Meopta 52.5mm Tube with this new rear lens housing.
So a little measurement is neccessary..
This must be the height size of the rear - lens - element..
No matter what we do, and how we do it... the rear lens has to be there after the work is finished...
Next step is to find out the correct distance to the next glas element of the Meopta in front of the shown rear lens in his new housing. Thats because we have to shorten the Tube of the Meopta to bring the rear lens in the same position the lens has before conversion.
Luckily it will fit. The next glas element is far away enough to make a plate for connecting the Meopta Housing Tube and the new rear lens holder..
combined..
After shorten the Meopta tube to the correct value, drilling 6 inner holes for the new moveable lens housing (1.7mm) and some threats for 2mm screws and 3 holes and threats for 3mm screws for the connection plate to the Meopta 52,5mm Tube, this conversion looks like this...
And now the nearly final part of the conversion...
The counterpart of the helicoid has to build into an PK to NEX Adaptor...
With this last step the conversion is complete... the whole new Meopta Housing is able to intrude to the camera mount and the lens reaches infinity. So register - distance fits..
If anybody wants to do the same... contact me for parts if neccessary.
With this idea and realisation the lens can focus a little behind infinity.
And now the really last idea for this conversion... to limit the move out and separation off the two helicoid parts..
Another Tube from an defective Zoom lens acts as a limiter. 3 screws on top of the tube are doing that job.. in the space between the Meopta Tubus and the zoom tube is a small ring made of plastik tape, so the lens will stop at this 3 screws, just before separating the parts....
Here are some first shots after work is done... its a nice playing tool with f1.0 !!
heavy sunlight conditions...
IMHO an interesting lens... lens do have problems on the edges, especially on the horizontal 24mm side, but thats normal because the projection plane is designed for only 16mm project-fields. Now, acting as a taking lens, you will see the edges are a bit soft and unsharp, but no matter for the most sujets.. especially if you use the lens upright, mostly no problem with it.
Cheers
Henry _________________ some light-painting lens stuff..
... and an EOS 5D MKII
www.digicamclub.de
Last edited by hinnerker on Mon Dec 04, 2017 8:20 am; edited 7 times in total |
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raay04
Joined: 08 Dec 2012 Posts: 340 Location: India
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Posted: Fri Aug 16, 2013 4:52 pm Post subject: |
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raay04 wrote:
Awoesome ,just awosome conversion!!! really like all the photos,specially the orange flower one!!! _________________ Cameras-Point and shoot- Powershot A590IS Mirroless-SONY NEX-3
Lenses
M42 Mount
Super-Takumar 55/1.8, Super-Takumar 50/1.4 ,SMC Takumar 50/1.4 ,MC Helios 44M7-58/2,MC Helios 77M-4 50/1.8,Helios 44-2(valdai), Zenitar-M 50/1.7 Pentacon 50/1.8, MC Jupiter-37AM 135/3.5, Industar 50-2 50/3.5
Nikon F mount
Vivitar close focus 28/2.8(Komine) Keleinar 5N 100/2.8
LTM
Jupiter 8 50/2
KIEV
Jupiter8M ( element donor lens )
Minolta SR(MD)
MD 35/1.8, MD 35-70/3.5 macro, MD 50/1.4 ,Vivitar Auto macro 55/2.8,
Canon FD
FDn50/1.4
Minolta AF
Vivitar (cosina) 100/3.5 macro
Minolta AF 35-70/4
Enlarger
EL NIKKOR 50/2.8
Adaptall
Tamron 24/2.5 , Tamron sp 90/2.5 |
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LucisPictor
Joined: 26 Feb 2007 Posts: 17633 Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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Posted: Fri Aug 16, 2013 7:25 pm Post subject: |
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LucisPictor wrote:
Once again excellent, Henry! _________________ Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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Lightshow
Joined: 04 Nov 2011 Posts: 3669 Location: Calgary
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Posted: Sun Aug 03, 2014 12:49 am Post subject: |
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Lightshow wrote:
How did I miss this?
Very cool. _________________ 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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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Sun Aug 03, 2014 1:04 am Post subject: |
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Attila wrote:
EXcellent job Henry, thank you for sharing it! Nice to see your lady on picture again! _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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bernhardas
Joined: 01 Jan 2013 Posts: 1437
Expire: 2017-05-23
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Posted: Sun Aug 03, 2014 1:33 am Post subject: |
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bernhardas wrote:
Edited
Last edited by bernhardas on Mon Jul 25, 2016 7:29 am; edited 1 time in total |
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hifisapi
Joined: 25 Sep 2012 Posts: 941 Location: USA
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Posted: Sun Aug 03, 2014 2:56 am Post subject: |
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hifisapi wrote:
interesting results, thanks for posting. _________________ ===========
ACQUIRED OVER 30 YEARS:
Cameras: DSLR=Pentax istDS FILM=Pentax SP, SP-F, ESII, SP1000, KX, K2
Lenses : Pentax M42 = Super Multi Coated Takumars 50/1.4 55/1.8 100/4-BELLOWS 500/4.5 1000/8 135-600/6.7 Pentax PK= SMC Pentax-Ks K17/4-FF Fisheye K18/3.5 K20/4 K24/3.5 K28/3.5 K28/2 K35/3.5 K35/2 K50/1.2 K50/1.4K 50/4-MACROK 55/1.8 K85/1.8 K100/4-MACRO K100/4-BELLOWS K105/2.8 K120/2.8 K135/3.5 K135/2.5 K150/4 K200/4 K400/5.6 K45-125/4K 85-210/4.5 Pentax PKM = SMC Pentax-M M40/2.8-Pancake M50/1.4 M75-150/4 M80-200/4.5 Pentax PKA= SMC Pentax-A A15/3.5 A50/2.8-MACRO A28/2 A35/2 A50/1.4 A135/2.8 A200/4 A*300/4 A35-105/3.5 A24-50/4 A70-210/4 TAMRON AD2= SP80-200/2.8 SP180/2.5 TOKINA AT-X PK= ATX28-85/3.5-4.5 ATX35-70/2.8 ATX60-120/2.8 ATX80-200/2.8 ATX100-300/4 ATX90/2.5 MACRO KIRON-LESTER DINE PK = 105/2.8-MACRO VIVITAR PK = 135/2.8-MACRO 28-85/4 NOFLEXAR AUTOBELLOWS PK = 60/4 105/4 |
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wolfhansen
Joined: 06 Oct 2013 Posts: 511 Location: Germany, Ruhr Area
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Posted: Thu Oct 02, 2014 9:46 pm Post subject: |
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wolfhansen wrote:
Thanks to Henry i got my Meo 1.0/70mm this week.
Great smooth focusing with his velvet helicoid - the lens is usable from approx. 20cm to infinity
Here some pics
_________________ Greets
Wolfgang
Last edited by wolfhansen on Thu Oct 02, 2014 10:59 pm; edited 1 time in total |
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Attila
Joined: 24 Feb 2007 Posts: 57839 Location: Hungary
Expire: 2021-11-18
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Posted: Thu Oct 02, 2014 10:25 pm Post subject: |
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Attila wrote:
Great succes, congrats to both of you!! _________________ -------------------------------
Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Oct 03, 2014 8:13 am Post subject: |
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kds315* wrote:
Hmm, Wolf, how come the train station at night + goat looks relatively sharp, but the flowers look
quite soft and a lot or flare around?
Possible reasons:
a) the lens is extremely susceptible to flare and bright objects reflecting lots of light
b) the lens works better for further away objects, but not so well close up
c) ??
Nice shots though! _________________ 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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wolfhansen
Joined: 06 Oct 2013 Posts: 511 Location: Germany, Ruhr Area
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Posted: Fri Oct 03, 2014 8:42 am Post subject: |
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wolfhansen wrote:
Klaus, the lens is extremely soft at close up. In the next days i do a
concert shooting with the lens - it will be interesting to see the results. _________________ Greets
Wolfgang |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Fri Oct 03, 2014 9:20 am Post subject: |
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kds315* wrote:
Thanks, looking forward to seeing your results! I expect it to perform quite well actually! _________________ 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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hinnerker
Joined: 17 Aug 2009 Posts: 929 Location: Germany near Kiel
Expire: 2015-08-09
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Posted: Fri Oct 03, 2014 11:25 am Post subject: |
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hinnerker wrote:
Images for the first post recovered.
This extremly difficult conversion is no longer necessary with the new velvet helicoid.
Image recover is only to complete this article again.
Regards
Henry _________________ some light-painting lens stuff..
... and an EOS 5D MKII
www.digicamclub.de |
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groundlessfears
Joined: 14 Sep 2013 Posts: 11 Location: Lahore
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Posted: Wed Nov 30, 2016 5:59 pm Post subject: groundlessfears |
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groundlessfears wrote:
i have this lens.. and i opened it for cleaning. now i am little confused about one element that i have mistakenly placed it to the wrong direction. if someone have the schematics for the Meopta Meostigmat 1/70 then kindly share with me please.. i never found on internet.. _________________ SmokeGrafix |
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Basilisk
Joined: 21 Mar 2013 Posts: 356 Location: UK
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Posted: Wed Nov 30, 2016 6:32 pm Post subject: |
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Basilisk wrote:
kds315* wrote: |
Hmm, Wolf, how come the train station at night + goat looks relatively sharp, but the flowers look
quite soft and a lot or flare around?
Possible reasons:
a) the lens is extremely susceptible to flare and bright objects reflecting lots of light
b) the lens works better for further away objects, but not so well close up
c) ??
Nice shots though! |
Without stopping down, your DOF is less than a millimeter at 30cm. |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Thu Dec 01, 2016 12:05 am Post subject: |
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kds315* wrote:
Basilisk wrote: |
kds315* wrote: |
Hmm, Wolf, how come the train station at night + goat looks relatively sharp, but the flowers look
quite soft and a lot or flare around?
Possible reasons:
a) the lens is extremely susceptible to flare and bright objects reflecting lots of light
b) the lens works better for further away objects, but not so well close up
c) ??
Nice shots though! |
Without stopping down, your DOF is less than a millimeter at 30cm. |
I know that, as I use a lot of fast projection lenses. What has DOF to do with softness and flare? Nothing at all. _________________ 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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wolfhansen
Joined: 06 Oct 2013 Posts: 511 Location: Germany, Ruhr Area
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Posted: Thu Dec 01, 2016 9:38 am Post subject: |
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wolfhansen wrote:
Some concert shots with the 1.0/70mm - Cinema Solariens (Avantgarde/Electronics/Freejazz)
James Harrar
Rogier Smal
Crowd shot at MPS Festival Dortmund, Germany _________________ Greets
Wolfgang |
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Thu Dec 01, 2016 4:43 pm Post subject: |
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kds315* wrote:
Excellent Wolf!! _________________ 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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Raul Cantu
Joined: 10 Oct 2017 Posts: 1
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Posted: Tue Oct 10, 2017 11:01 pm Post subject: Do you sell this lens with adapter to a Sony A7R2? |
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Raul Cantu wrote:
Do you sell this lens with adapter to a Sony A7R2?
hinnerker wrote: |
Images for the first post recovered.
This extremly difficult conversion is no longer necessary with the new velvet helicoid.
Image recover is only to complete this article again.
Regards
Henry |
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wolfhansen
Joined: 06 Oct 2013 Posts: 511 Location: Germany, Ruhr Area
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Posted: Wed Oct 11, 2017 8:55 am Post subject: |
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wolfhansen wrote:
Meanwhile the Meostigmat 1.0/70mm is very hard to get -unfortunately _________________ Greets
Wolfgang |
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wolfhansen
Joined: 06 Oct 2013 Posts: 511 Location: Germany, Ruhr Area
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Posted: Thu Oct 12, 2017 12:11 pm Post subject: |
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wolfhansen wrote:
Rare & expensive
http://www.ebay.de/itm/142535696990 _________________ Greets
Wolfgang |
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jnarciso
Joined: 17 Apr 2009 Posts: 39
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Posted: Thu Oct 12, 2017 12:46 pm Post subject: |
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jnarciso wrote:
Pure craftmanship!!!
well done!!!
JN |
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thebbm
Joined: 11 Dec 2013 Posts: 295 Location: France montpellier
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Posted: Thu Oct 12, 2017 4:43 pm Post subject: |
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thebbm wrote:
did it worth to buy
- 1 meopta hyper 1.66 meostigmat 20 euros
- 1 meopte hyper 1.85 meostigma 20 euros
for a sony alpha aspc ? |
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wolfhansen
Joined: 06 Oct 2013 Posts: 511 Location: Germany, Ruhr Area
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Posted: Thu Oct 12, 2017 6:22 pm Post subject: |
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wolfhansen wrote:
Both lenses are auxiliary lenses for the MEO 5 XB1 and XB3 projektor.
You can read more about the lenses here:
http://www.film-tech.com/warehouse/manuals/MEO5XB1XB3.pdf (Page 9 ff.) _________________ Greets
Wolfgang |
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