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räuber
Joined: 13 Nov 2021
Posts: 33
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 Posted: Sat Nov 13, 2021 12:03 pm Post subject: lens design of Carl Zeiss Sonnar 50mm 1.5 (Opton and C) |
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räuber wrote:
I'm not sure if this is the right place to ask about the history of lenses but I give it a try.
Information about the (West German) Carl Zeiss Opton Sonnar 50mm F1.5 and the later 2004 Carl Zeiss C Sonnar 50mm F1.5 ZM are rare. I tried to figure out reliable information about those lenses but moving in circles now.
1.) Who calculated / created the lens design of this Sonnar lens?
2.) When was the lens calculated?
3.) When was the lens released?
I read that the Opton had a different calculation than the pre-war Sonnar. You can see it at the max aperture. The pre-war Sonnar 5cm 1.5 (v4) has a F22. The Opton Sonnar 50mm 1.5 (v5) has a F16. I was not able to find out who was the creator of the Opton Sonnar. Was it Bertele or some new designer in Oberkochen? I could not find any date to this version. No calculation date or when the first batch was produced. Maybe the answer is in the Fabrikationsbuch III of Hartmut Thiele but it is sold out and not one available here.
The same goes for the C Sonnar. You can find the technical specification of the new lens online but no insight about its creation. No calculation date nor who created it.
Can someone help?[/list] |
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tb_a
Joined: 26 Jan 2010
Posts: 3678
Location: Austria
Expire: 2019-08-28
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| Posted: Sat Nov 13, 2021 12:32 pm Post subject: |
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tb_a wrote:
Since these lenses are all produced by Cosina nowadays it may well be that it is a similar story likewise to the Cosina made Voigtländer lenses; i.e. the naming convention has nothing to do with the original construction any longer.
Zeiss is nowadays mainly a marketing and consultig company, at least for camera lenses. For example the Sony lenses with Zeiss badges are constructed and built by the former Minolta lens plant, even some Logitech Web cameras and smartphone wear Zeiss badges. Nobody knows what a lens qualifies to wear a Zeiss badge nowadays. I assume that it is mainly a costly marketing gag as the Zeiss branding is still a selling argument....
Just a possibility. I don't really know....
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Thomas Bernardy
Manual focus lenses mainly from Minolta, Pentax, Voigtlaender, Leitz, Topcon and from Russia (too many to be listed here). |
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stevemark
Joined: 29 Apr 2011
Posts: 3754
Location: Switzerland
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| Posted: Mon Nov 15, 2021 2:32 pm Post subject: |
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stevemark wrote:
Marco Cavina assumes that the Opton 1.5/50mm is based on a patent by Bertele (5/1949), using for the first time high refractive / low dispersive glass for a 1.5/50mm Sonnar:
http://www.marcocavina.com/articoli_fotografici/Sonnar_heritage/00_pag.htm
S
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stevemark
Joined: 29 Apr 2011
Posts: 3754
Location: Switzerland
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| Posted: Mon May 02, 2022 1:19 am Post subject: |
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stevemark wrote:
| tb_a wrote: |
| Zeiss is nowadays mainly a marketing and consultig company, at least for camera lenses. For example the Sony lenses with Zeiss badges are constructed and built by the former Minolta lens plant ... |
Are you sure about that?
Back in 2011, when I had direct contact with the responsible Sony engineers, the "Zeiss" badged lenses in the Sony lineup came from a direct cooperation with Zeiss, and NOT with Minolta. Back then, these "Sony Zeiss" lenses were produced partly at Sony factories, partly at Cosina workshops (e. g. the ZA 1.4/85and the ZA 1.8/135).
Minolta however was developing/producing the "Sony G" lenses. And I was told later - albeit not directly by Sony engineers - that the Sony GM lenses were "Minolta-made" as well.
S
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BrianSVP
Joined: 09 Jun 2023
Posts: 301
Location: Philadelphia
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| Posted: Sat Mar 23, 2024 1:24 pm Post subject: |
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BrianSVP wrote:
WTF is with the 2 different messages with weird spam in them by this poster in this thread 2 years apart?
| RParsons00 wrote: |
| The lens design of the Carl Zeiss Sonnar 50mm 1.5 is a testament to precision engineering and optical excellence. Renowned for its impeccable image quality and distinctive bokeh, this lens showcases Carl Zeiss's commitment to innovation. Its carefully crafted elements deliver sharpness and clarity, making it a favorite among photographers and cinematographers alike. From capturing intimate portraits to breathtaking landscapes, the Sonnar 50mm 1.5 excels in every scenario, ensuring remarkable results. Medical Wholesale Supplies also recognize its unrivaled performance for documenting medical procedures with unparalleled clarity and detail. |
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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Sat Mar 23, 2024 4:37 pm Post subject: |
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calvin83 wrote:
There are better AI bots now. 
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The best lens is the one you have with you. |
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visualopsins
Joined: 05 Mar 2009
Posts: 10550
Location: California
Expire: 2025-04-11
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| Posted: Tue Mar 26, 2024 12:36 am Post subject: |
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visualopsins wrote:
Spam is gone
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☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ 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 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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calvin83
Joined: 12 Apr 2009
Posts: 7554
Location: Hong Kong
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| Posted: Tue Mar 26, 2024 1:24 am Post subject: |
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calvin83 wrote:
| visualopsins wrote: |
| Spam is gone |
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https://www.instagram.com/_lens_fever/
The best lens is the one you have with you. |
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