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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Sun Mar 07, 2021 4:05 pm Post subject: Schneider Curtagon 35mm versions |
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blotafton wrote:
Hey everyone. To add some activity to the forum maybe you can tell me about the different optical versions of the Curtagon 35mm 2.8.
My research led me to page with three diagrams first version with 5 elements, Alpa version with 6 elements and a new version with 6 elements. If I remember correctly.
What I'd like to know is if you have tried one or more and have opinions on them.
I got a Edixa Curtagon that I think is the 5 element version.
I'm really looking forward to useing it in the summer for bokeh closeups. Samples online looks great.
Recently I have opened my eyes for old 35mm's and 28mm's. It's interesting that some are like normal lenses with a large element in front.
For example Quinon 35mm 2.8 and Super Takumar 35mm f2 V1 are like Planars. Sadly I don't have these two. But I have others that I will mount on close focus adapters and get lots of bokeh.
Just some random thoughts ![Smile](images/smiles/icon_smile.gif) |
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calvin83
![Level 4 Level 4](rating4.gif) Joined: 12 Apr 2009 Posts: 7555 Location: Hong Kong
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Sun Mar 07, 2021 6:03 pm Post subject: |
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blotafton wrote:
Beautiful bokeh from both! |
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tomasg
![Level 3 Level 3](rating3.gif) Joined: 01 Nov 2009 Posts: 1135
Expire: 2014-04-28
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Posted: Sun Mar 07, 2021 6:05 pm Post subject: |
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tomasg wrote:
I like mine, i have the late all metal version in Exakta mount, check this site (using google translate):
https://photobutmore.de/exakta/schneider/
You ll find diagrams of the lens optical construction, one of the members here posted the 3 different optical schemes some time ago (i think it was Stevemark).
few examples with mine, though not close up:
https://www.flickr.com/photos/131684321@N03/albums/72157714815812888
Check also the Isco Gottingen Westron 35/2.8:
https://photobutmore.de/exakta/isco/
Similar lens (Isco was part of Schneider Kreuznach), five elements, i have two close up examples with this one, seems to have a lovely bokeh
https://www.flickr.com/photos/131684321@N03/albums/72157714813992121 |
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papasito
![Level 3 Level 3](rating3.gif) Joined: 09 Jan 2015 Posts: 1659
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Posted: Sun Mar 07, 2021 7:36 pm Post subject: |
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papasito wrote:
I have the schneider angulon 35/2,8 in QBM.
This lens has seven elements.
You can see it from
http://www.klassik-cameras.de/Rollei_QBM_Schneider_dt.html. |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Mon Mar 08, 2021 8:16 pm Post subject: |
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blotafton wrote:
Good information in the first link.
I like your photos, makes wish it was summer now.
Yes that Westron looks good too. I'll get one if I can find it at a good price. |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Mon Mar 08, 2021 8:17 pm Post subject: |
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blotafton wrote:
I can't see any images on that site. But I googled it and it looks interesting. |
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kymarto
![Level 2 Level 2](rating2.gif) Joined: 30 Nov 2016 Posts: 406 Location: Portland, OR and Milan, Italy
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Posted: Mon Mar 08, 2021 11:26 pm Post subject: |
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kymarto wrote:
The Isco Westron seems to have later become the Westromat, with the same optics. I find it a great lens with really unique bokeh (though maybe similar to at least the Retina Curtagon version). Here are a few processed examples. Another excellent 35mm is the Auto Takumar 35mm f2.3, which was the Japanese version of the Angenieux R1 retrofocus. A few examples follow. Finally, for 35mm lenses, my fave list is rounded out by the Wollensak Fastax Raptar 35mm f2 (there was a civilian version, perhaps a bit older but identical called the Velostigmat). Even though designed for 16mm Fastax cameras, the lens covers full frame. A couple of shots with that follow the others.
Westromat
#1
#2
#3
#4
#5
Auto Takumar
#1
#2
#3
#4
#5
#6
Wollensak Velostigmat
#1
#2
#3
#4
#5
#6
![](http://forum.mflenses.com/userpix/20213/10000__DSC6465_1.jpg) _________________ Vintage lens aficionado |
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tomasg
![Level 3 Level 3](rating3.gif) Joined: 01 Nov 2009 Posts: 1135
Expire: 2014-04-28
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Posted: Tue Mar 09, 2021 12:32 pm Post subject: |
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tomasg wrote:
I have four Isco lenses the Westron ones have a simple manual preset aperture with a lateral knob, the Westromat ones have both a manual or automatic aperture with an A/M switch and a pin in the back. BTW the plastic ones have only the external parts made of plastic, it s a good quality plastic, still felxible today. The internal are all metal, including brass, a few pics of a humble 135/3.5:
#1
#2
#3
![](http://forum.mflenses.com/userpix/20213/2108_IMG_20210302_121509_1.jpg) |
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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: Tue Mar 09, 2021 12:41 pm Post subject: |
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calvin83 wrote:
blotafton wrote: |
I can't see any images on that site. But I googled it and it looks interesting. |
You can find few sample on my SL-Angulon 35mm F2.8 here.
https://www.flickr.com/photos/calvin83/albums/72157645062421770 _________________ https://lensfever.com/
https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Wed Mar 10, 2021 5:03 pm Post subject: |
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blotafton wrote:
kymarto wrote: |
The Isco Westron seems to have later become the Westromat, with the same optics. I find it a great lens with really unique bokeh (though maybe similar to at least the Retina Curtagon version). Here are a few processed examples. Another excellent 35mm is the Auto Takumar 35mm f2.3, which was the Japanese version of the Angenieux R1 retrofocus. A few examples follow. Finally, for 35mm lenses, my fave list is rounded out by the Wollensak Fastax Raptar 35mm f2 (there was a civilian version, perhaps a bit older but identical called the Velostigmat). Even though designed for 16mm Fastax cameras, the lens covers full frame. A couple of shots with that follow the others. |
I've already looked at them on your website, love it! |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Wed Mar 10, 2021 5:04 pm Post subject: |
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blotafton wrote:
Thanks! |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Wed Mar 10, 2021 5:11 pm Post subject: |
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blotafton wrote:
Here is a lens I have and will use more. MIR 1 37mm 2.8 silver.
This lens made me realize that 35mm lenses can be interesting to use up close.
![](https://live.staticflickr.com/1865/43848232905_90fabc26e5_b.jpg) |
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papasito
![Level 3 Level 3](rating3.gif) Joined: 09 Jan 2015 Posts: 1659
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Posted: Wed Mar 10, 2021 5:12 pm Post subject: |
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papasito wrote:
Thanks for sharing |
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kypfer
![Level 3 Level 3](rating3.gif) Joined: 27 Sep 2017 Posts: 523 Location: Jersey C.I.
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Posted: Thu Mar 11, 2021 10:35 pm Post subject: |
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kypfer wrote:
I've still got my Curtagon 35mm f/2.8 from my Retina IIIs and was always happy with it in my "film days", though I'd not be able to identify any specific shot I took with it today - negative filing was never my strong point!
I do have a DKL-PK adaptor so really should spend more time with this and my other Schneiders, but just never seem to get around to it ![Sad](images/smiles/icon_sad.gif) |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Sun Mar 21, 2021 2:42 pm Post subject: |
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blotafton wrote:
First shots with the Edixa Curtagon.
The bokeh is well behaved, nothing crazy. Noticeable sharpness drop towards the edges.
![](https://live.staticflickr.com/65535/51052471687_fe5635a77d_b.jpg) |
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Donny2515
Joined: 03 Dec 2021 Posts: 4
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Posted: Fri Dec 03, 2021 7:46 pm Post subject: |
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Donny2515 wrote:
I like such photos and the article is very informative, of course, I had to use an online translator https://www.translate.com/services/medical-translation which I usually use for such tasks, but I think that this is the best option because the quality of the translation is very close to the human one. Therefore, I recommend this service to everyone who is experiencing difficulties in this.
Last edited by Donny2515 on Mon Dec 06, 2021 7:19 am; edited 1 time in total |
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Lightshow
![Level 4 Level 4](rating4.gif) Joined: 04 Nov 2011 Posts: 3666 Location: Calgary
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Posted: Sun Dec 05, 2021 7:13 am Post subject: |
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Lightshow wrote:
blotafton wrote: |
Here is a lens I have and will use more. MIR 1 37mm 2.8 silver.
This lens made me realize that 35mm lenses can be interesting to use up close.
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Most wide lenses can be great fun when you get close up to subjects, the distortion is not a weakness if you learn how to use it, most of my favourite lenses are wide to ultrawide, Voigtlander 15(on VM-E helicoid adapter so I can get closer), Hexanon 21/4 I love this lens for cars, Yashica Tominon Super Yashinon-R 3.5cm f2.8 preset, oh how I love this lens, *Chefs kiss* _________________ 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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LittleAlex
![Level 3 Level 3](rating3.gif) Joined: 27 Nov 2008 Posts: 1657 Location: L'vov (Western Ukraine)
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Posted: Sun Dec 05, 2021 10:44 am Post subject: |
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LittleAlex wrote:
I had some experiences with the Schneider Kreuznach C-Curtagon 35mm f2.8 (M42), which is rather technical lens for the Security & Surveillance Cameras. So, it has simplified construction. And no protection for the first element from the side light-striking. But I was able to modify it, adding the front ring, which permits now to take the lens hood (and itself serves as a moderate hood), and also the filters, that significantly improved the situation:
http://forum.mflenses.com/schneider-kreuznach-c-curtagon-35mm-f2-8-m42-upgrade-t82333.html
There are some of my samples with that lens:
http://forum.mflenses.com/schneider-kreuznach-c-curtagon-35mm-f28-m42--sony-a7s-t82164.htm _________________ "Sharpness is a bourgeois concept" - © H. Cartier Bresson |
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serkol
![Level 3 Level 3](rating3.gif) Joined: 26 Aug 2012 Posts: 921 Location: Belarus
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Posted: Mon Dec 06, 2021 7:41 am Post subject: |
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serkol wrote:
My Schneider Kreuznach Curtagon 35mm f2.8 DKL + Ricoh GXR
#1
#2
#3
#4
[/img] _________________ Regards,
Sergey |
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Minolfan
![Level 4 Level 4](rating4.gif) Joined: 30 Dec 2008 Posts: 3437 Location: Netherlands
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Posted: Mon Dec 06, 2021 8:30 am Post subject: |
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Minolfan wrote:
![Like 1](images/smiles/like-1.gif) |
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Max78
![Level 1 Level 1](rating1.gif) Joined: 14 Oct 2011 Posts: 78
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Posted: Mon Dec 13, 2021 12:14 pm Post subject: |
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Max78 wrote:
I have several Schneider 35mm lenses staying on the shelves:
1. Curtagon (Image Orthicon) with M48x1 mount from ca. 1960: 46mm filter thread, many aperture blades, filter ring rotates together with the aperture. This lens was used on a studio TV-Camera;
2. Edixa-Curtagon with M42 mount from 1962: usual zebra, 49mm filter thread, 5 blades
3. Curtagon Electric with M42 mount from 1973: 49mm filter thread, 6 blades
4. SL-Angulon for Rollei QBM from 1973, 6 blades
I’m not using these lenses quite often, so I can’t post any pics made with them. However I can share my personal observations here.
I’m pretty sure that Curtagon Electric and SL-Angulon is the same lens optically, so both should have 7 elements as it is shown on the Rollei Lens diagram. The aperture blades are visually closer to the mount if you look on them from the back. Both lenses also feel the same. The production year is the same, but the coatings look different.
Older Curtagons have possibly 6 elements. It is difficult to judge, since even Schneider literature has errors in the diagrams.
Curtagon for TV cameras just received its adapter and I will try to use it more often in spring 2022 and afterwards.
There are many other Curtagons produced: DKL, Exakta and M42 with different mechanics and exterior…
All four lenses:
SL-Angulon and Curtagon Electric from behind:
Aperture blades of TV-Curtagon
![](http://forum.mflenses.com/userpix/202112/4801_curt03_1.jpg) |
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blotafton
![Level 3 Level 3](rating3.gif) Joined: 08 Aug 2013 Posts: 1608 Location: Sweden
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Posted: Thu Feb 17, 2022 7:08 pm Post subject: |
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blotafton wrote:
New revelation. I have acquired an ISCO Göttingen Berolina Westromat 35mm 2.8.
This lens seems to be very similar to the first Curtagon optically and somewhat the way it is built.
This is supposed to be the Westromat. I don't remember where I found this image.
I did a mini test to see if there were any differences.
Berolina Westromat
Curtagon version 1
EBC Fujinon 35mm 2.8
Flektogon 35mm 2.8
Mir-1 silver
![](http://forum.mflenses.com/userpix/20222/7206_DSC00729MIR1scalw_1.jpg) |
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martinsmith99
![Level 4 Level 4](rating4.gif) Joined: 31 Aug 2008 Posts: 6950 Location: S Glos, UK
Expire: 2013-11-18
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Posted: Fri Feb 18, 2022 7:46 am Post subject: |
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martinsmith99 wrote:
The bokeh on these lenses is an acquired taste.
![Laugh 1](images/smiles/laugh-1.gif) _________________ Casual attendance these days |
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paulhofseth
![Level 3 Level 3](rating3.gif) Joined: 05 Mar 2011 Posts: 573 Location: Norway
Expire: 2018-06-28
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Posted: Fri Feb 18, 2022 11:33 am Post subject: |
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paulhofseth wrote:
the Curtagons also came in a version with a light meter fitted on top at the time when built-in LMs in SLRs were unusual.
Also, the ISCO name is an abbreviation of Joseph Schneider & co. And due to their wartime production they were not allowed to use the name for a few years afterwards.
While the Westrogon is also connected with German postwar history in that its optics constructor had escaped from the DDT-East Zone where he had a similar job.
p. |
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