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Oldhand
Joined: 01 Apr 2013 Posts: 6009 Location: Mid North Coast NSW - Australia
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Posted: Sat Jul 25, 2015 5:02 am Post subject: Are all Schneider Kreuznach Xenon 50mm f/2 lenses the same.. |
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Oldhand wrote:
So, as the title suggests - are they all basically the same lens no matter which camera they are attached to?
I note that some are interchangeable lenses and on some cameras they are fixed and have leaf shutters.
And further, are the Schneider Kreuznach Xenon 50mm f/1.9 lenses basically the same as the f/2 versions or completely different designs?
Interested to know
Thanks in advance for your help
OH |
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duckrider
Joined: 11 Dec 2013 Posts: 437 Location: Germany
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Posted: Sat Jul 25, 2015 9:05 am Post subject: |
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duckrider wrote:
looking through theses pages
http://www.klassik-cameras.de/Biotar_en.html
http://www.klassik-cameras.de/Rolleiflex350.html#Xenon
You can see, there was a developing of Tronnier's design over the decades,
f-stops 2, 1.8, 1.5 and as prototypes 1.4 were built.
But I think Xenon in diverse mount for diverse cameras at the same time should have had same optical design. _________________ T*homas
(from the origin land of Zeiss, an obligation )
Zeiss ZF 3.5/18, 2.8/25, 2.0/35, 2/50macro, 1.4/50, 1.4/85, 2/100macro
Nikon Df, F2AS, F2A, F3/T, FM
ALPA 11Si, Angulon 2,8/35 ; Xenar 1,9/50 ; Tele-Tessar 4/200
Leica R3 SAFARI Safari Lenses 2.8/28 ; 2/50 ; 4/180
Rolleiflex SL 350 , Zeiss 2,8/16 ; 4/18 ; 2,8/25 ; 2,8/35 ; 1,4/35 ; 1,8/50 ; 2,8/85 ; 1,4/85 ; 4/135 ; 4/200
Leica M9-P, Leica M4-2, Tri-Elmar "Wate", Distagon 2,8/21, Biogon 2,8/28, Biogon 2/35, Planar 2/50, Tessar 4/85, M-Elmar 50mm, Summicron 90
Sony alpha 7r & adapters for all lenses above |
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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Jul 25, 2015 9:20 am Post subject: |
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calvin83 wrote:
No matter it is F2, F1.9 or F1.8, it is a 6e/4g double-gauss design. However, Schneider improve the design/coating over time. _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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Oldhand
Joined: 01 Apr 2013 Posts: 6009 Location: Mid North Coast NSW - Australia
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Posted: Sat Jul 25, 2015 11:32 am Post subject: |
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Oldhand wrote:
Thank you Thomas and Calvin.
What about this one with built in shutter?
6e/4g double-gauss design too?
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kds315*
Joined: 12 Mar 2008 Posts: 16544 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Sat Jul 25, 2015 12:13 pm Post subject: |
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kds315* wrote:
Having the same design doesn't imply that it hasn't been optimized for a certain use - it often has. Renowned lens makers are known to do that. _________________ 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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calvin83
Joined: 12 Apr 2009 Posts: 7554 Location: Hong Kong
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Posted: Sat Jul 25, 2015 12:54 pm Post subject: |
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calvin83 wrote:
The lens used on a shutter in your RF may be different to the later SLR lens. It may carry the pre-war design which is 6e/5g from the information here http://photo.net/classic-cameras-forum/00MdtU . _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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padam
Joined: 09 Oct 2012 Posts: 175 Location: Hungary
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Posted: Sat Jul 25, 2015 12:58 pm Post subject: |
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padam wrote:
In short, no they are not.
Some of them are better than others, but several of them can be considered as equal to each other as well... |
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paulhofseth
Joined: 05 Mar 2011 Posts: 566 Location: Norway
Expire: 2018-06-28
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Posted: Sat Jul 25, 2015 7:15 pm Post subject: subtle variations |
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paulhofseth wrote:
I would be very surprised if an early Xenon had the same glasses and radii as the latest ones. And as the current naming- and brand fetishism took shape, Schneider like the others, started to use the name Xenon for other optical designs.
I am certain that a 50mm 0,95 Xenon for smaller formats is of a different (and more complex) construction than the ancient 50\2 for full frame.
p. |
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francotirador
Joined: 17 Sep 2009 Posts: 894
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Posted: Thu Nov 09, 2017 5:14 am Post subject: |
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francotirador wrote:
[quote="calvin83"]The lens used on a shutter in your RF may be different to the later SLR lens. It may carry the pre-war design which is 6e/5g from the information here http://photo.net/classic-cameras-forum/00MdtU .[/quote]
Thank you very much, I was looking for that information. I am experimenting with Retina and Voigtlander ragefinders lenses. There are wonders |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Thu Jul 29, 2021 8:18 pm Post subject: |
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Blazer0ne wrote:
...
Last edited by Blazer0ne on Tue Feb 22, 2022 5:55 pm; edited 1 time in total |
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cooltouch
Joined: 15 Jan 2009 Posts: 9097 Location: Houston, Texas
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Posted: Thu Jul 29, 2021 11:13 pm Post subject: |
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cooltouch wrote:
The Kodak IIc and IIC Retina models came with a Xenon f/2.8 as standard, but the 50/2 was available as an option. The later IIIc and IIIC came standard with the 50mm f/2 Xenon. These lenses continued in use with Kodak's Retinas, up to (and including) the Retina Reflex. _________________ Michael
My Gear List: http://michaelmcbroom.com/photo/gear.html
My Gallery: http://michaelmcbroom.com/gallery3/index.php/
My Flickr Page: https://www.flickr.com/photos/11308754@N08/albums
My Music: https://soundcloud.com/michaelmcbroom/albums
My Blog: http://michaelmcbroom.com/blogistan/ |
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Blazer0ne
Joined: 12 Sep 2018 Posts: 836
Expire: 2024-12-07
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Posted: Fri Jul 30, 2021 2:53 am Post subject: |
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Blazer0ne wrote:
...
Last edited by Blazer0ne on Tue Feb 22, 2022 5:55 pm; edited 1 time in total |
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stevemark
Joined: 29 Apr 2011 Posts: 3754 Location: Switzerland
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Posted: Fri Jul 30, 2021 9:41 am Post subject: |
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stevemark wrote:
Blazer0ne wrote: |
Xenon 50mm f2 from the Diax at front and rear element.
#2
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Looks pretty low to me - 0.07 mR/h corresponds to 600mR/y. Compare this to the estimated average dose in Switzerland which is about the same (around 6 mSv/y = 600 mR/y, see here on the official site of the Swiss government: https://www.bag.admin.ch/bag/de/home/gesund-leben/umwelt-und-gesundheit/strahlung-radioaktivitaet-schall/strahlung-gesundheit/strahlenexposition-der-schweizer-bevoelkerung.html).
I would guess it's simply from thorium impurities in the lanthanum (rare earth) glass - thus not intentionally thoriated glass.
cooltouch wrote: |
The Kodak IIc and IIC Retina models came with a Xenon f/2.8 as standard, but the 50/2 was available as an option. The later IIIc and IIIC came standard with the 50mm f/2 Xenon. These lenses continued in use with Kodak's Retinas, up to (and including) the Retina Reflex. |
By coincidence, yesterday I got my first Schneider Xenon f2,0/50mm - this one is from a Retina Reflex:
Blazer0ne wrote: |
Below, two different version 50/2 xenons are listed as non-radioactive. The slightly older Diax version of the 50/2 xenon has different glass.
https://camerapedia.fandom.com/wiki/Radioactive_lenses
Schneider Kreuznach Retina-Xenon 50mm f/2.0 (Kodak Retina II)
Schneider Kreuznach Retina-Xenon C 50mm f/2.0 (Kodak Retina IIIC) |
This might have to do simply with a purer charge of lanthanum glass (=less thorium contamination).
S _________________ www.artaphot.ch |
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