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オールドレンズ女子部 撮影散歩&お茶会
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2009/06/04

Carl Zeiss Jena PANCOLAR 50mm/F1.8(M42)
カールツァイス パンコラー

  • 2014年の記事(改訂版)はこちらです。
  • 2009年の記事(アーカイブ)はこちらです。

17 件のコメント:

  1. Spiralさん、ご無沙汰です。
    ウチにもやっとF1.8のPancolorが嫁いで参りました。
    ヤフオクで絞り不具合のジャンクでしたので、バラして絞りの清掃と調整して復活させました。
    で、Takumar見たいに黄色いレンズだろうなぁと思ってたら、なんか黄変してないんですよ。
    ちょっと調べたら、ウチに嫁いで来たゼブラのPancolorは後期物らしく、レンズは黄変しない様でした。
    また、外見では繰り出る部分がTessarの様に段になって先細りじゃ無いんですよ。根元から同じ太さで先まで行く感じです。これが前期と後期の外観の判別出来る部分らしいです。
    黄変するPancolorは同時期のゼブラTessarと並べたらそっくりとの事です。^^

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    1. komoriさん
      こんにちは

      ごぞんじでしたら教えていただきたいのですが、後継の黒鏡胴モデルに黄変の発生は
      ありますか?もしないのなら、その過渡期ということでゼブラの黄変なしも
      ありうると思います。

      黄変については紫外光を当て続けることで除去できることがわかっています。
      この方法で本当に元に戻ったのかについては疑問ではありますけれど・・・。

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    2. はじめまして。いわおと申します。
      ウチにある黒鏡胴・接点付のMCには、それと判るような黄変は見られません。
      確かに新品のレンズと見比べると、若干黄色い様な気もしますが、同じ頃(70~80年代初頭)の他のレンズと、同じような物です。

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    3. 下のkomori さんのコメントでも、黒鏡胴には黄変の兆候が少ないと述べられていますね。情報ありがとうございます。

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  2. Spiralさん、こんばんは。
    ウチにゼブラの後の黒鏡胴のMC Pancolorは居ないのでちょっと判りませんが、でもネットで見る限り黒鏡胴のMC Pancolorは黄変してる写真は見かけないですね。
    ウチのもガイガーカウンタがあればハッキリするんでしょうけど、黄変してる我が家のF1.4タクマーさんに比べたら、普通に白いです。
    ウチのレンズが880.1万番台で「aus JENA」表記ではなくちゃんと「Carl Zeiss Jena」表記なのですが、870万番台のレンズで「aus JENA」表記のもあるみたいですし、Leitzと違ってその辺は曖昧みたいですねぇ。
    過渡期には中身の違う物、鏡胴が違う物なんかあるみたいですし、これだってならないのが気持ち悪いですね。(笑)

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    1. 輸出用はAus Jena、東ドイツ国内の販売分はCarl Zeiss Jenaだったそうです。
      過渡期の製品のなかにはゼブラでMC表記のものがあったそうです。

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  3. Spiralさん、こんばんは。^^
    輸出用と国内用で銘板が違ったんですねぇ。
    ゼブラでMC・・・それもネットでみました。
    黒鏡胴のMCで「青いコーティングが綺麗・・・でも黄変」なんてのも見ました。
    ウチのPancolarが黄変してないのはブラックライトの防湿庫保管だったんでしょうか?
    なんか後期の黄変しない物なのか段々訳が判らなくなりました。(笑)
    でも、明らかにネットで見られる黄変したレンズとは違ってるんですよ。
    東西分断されて大変でしょうけど、ZeissもCANONのHPみたいに昔の自社製品のカタログを、触り程度でも良いから載せて欲しいですねぇ。

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    1. ゼブラでMC・・・欲しいです。
      >自社製品のカタログを、触り程度でも良いから載せて欲しいですねぇ。
      全く同感です。

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  4. Since I have not posted for a long time let me give some info from some official Carl Zeiss books I own ;)

    The first Pancolar 50mm was the Pancolar 50/2 and was identical to the Zeiss Flexon 50/2. The some design of the Flexon (6 elements/ 4 groups...6/4) was also used for the first Pancolar 50/1.8 up to serial number 8552600 (from 1964 up to 1967). Then a new optical design was calculated and used using a 6/5 design and NOT using radioactive elements. The late m42 zebra Pancolars and MC Pancolars use the same 6/5 design.

    The first Pentacon 50/1.8 that was produced in Jena factories also had the 6/5 design but later produced in Meyer factories owned by CZJ anyway ....later Pentacons (version2&3) had again a 6/4 design based on the Oreston 50/1.8.

    Just to remark that Quality Control in the Jena factories after 1976~1978 went downhill so that will you will find late 50/1.8 Zebras with better image quality and richer colours than later MC ones ;)
    The 1Q makred ones are better constructed but quality of lens barrel is very weak in relation to Oberkochen Zeiss lenses.

    Here are the Lens optical designs from Koji kawakami site:
    http://www.pbase.com/kkawakami/prakticar_lens_designs

    Pancolar and Pentacon



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    1. > The first Pancolar 50mm was the Pancolar 50/2 and
      > was identical to the Zeiss Flexon 50/2. The some
      > design of the Flexon (6 elements/ 4 groups...6/4)
      > was also used for the first Pancolar 50/1.8 up to
      > serial number 8552600 (from 1964 up to 1967).
      > Then a new optical design was calculated and used
      > using a 6/5 design and NOT using radioactive
      > elements. The late m42 zebra Pancolars and MC
      > Pancolars use the same 6/5 design.

      It is interseting that the policy for improvement
      is quite similar to that of Prakticar 50mm F1.4.

      >The first Pentacon 50/1.8 that was produced in Jena factories also had
      > the 6/5 design but later produced in Meyer factories owned by CZJ
      > anyway ....later Pentacons (version2&3) had again a 6/4 design
      > based on the Oreston 50/1.8.


      It is very helpful for me.
      I will add information to the blog entry of Oreston 1.8/50 and Pentacon 1.8/50.
      Thank you very much.

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    2. Dear Soze,
      I have a late Pancolar ZEBRA 1.8 50mm, with a 6/5 design, and with a crystal clear glass. The serial number is 90544568. Based on your comment, I'm very happy now, because this number and the 6/5 design means that it's not contains radioactive elements. Could you confirm this again please? Or could you mention a place on the net, where I can find some of those official Carl Zeiss issues with the usefull information of this thorium-case?

      ( I also have an other, older and earlier zebra lens with the serial number of 80505878. It's a slightly different one, the height is a bit shorter, and the glass is very yellowish...Maybe it's the radioactive one)

      Thank you for your answer.
      Mark, (Europe, Hungary)

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  5. just to add since I own many Pancolar 50/1.8 that the 6/5 later ones have cremier bokeh that the early 6/4 .
    Also Pancolar >Pentacon>Oreston from my own copies...

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    1. Hello
      Thank you for writing.

      > just to add since I own many Pancolar 50/1.8 that the 6/5
      > later ones have cremier bokeh that the early 6/4 .

      The similar reputation is known also for Pentacon Prakticar 50mm F1.4 whose first model was produced by Eberhard Dietzsch in Jena factory and later by Meyer factory. Koji Kawakami also said to me that bokeh of Meyer's Prakticar 1.4/50 became cremier than the early model produced by CZJ.

      It is described in Jena review (2/1984) that CZJ used the radioactive elements for initial lot of the early model, which were replaced later by CZJ using less expensive grass without loss of optical performance. Weight has been down 13 percent in late lot of initial model by CZJ. In addition, the transmission of the light is increased compared to the initial lot, the contrast of the center improvement, and uniformity of contrast has been much enhanced over the periphery from the center.

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    2. Can I ask your email address please? I'd like to ask some question about Pancolar Zebra lenses...Thank you. Mark.

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  6. Hi Geroge
    Mine or Keyser's addresss? Mine is shown at my profile.
    He posted the comment three month ago and does not easy to notice.

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  7. Hi Spiral, sorry for bothering you here. I think I've posted my comment to a wrong column, but I don't really understand the original Japan texts of the site. I have to use the google translator to figure out which button is which.. I'm looking for Keyser's email address, because I've bought a late ZEBRA Pencolar 1.8/50 lens, and I'd like to get some additional infos about the radioactive issues. Honestly I hope it not contains any radioactive parts, because the serial number is around 9500000. I just wanted to ask him to send me a confirmation, also I'd like to find those official Zeiss issues and books, what he mentioned before in his comment. Would you be so kind to help me to conact him please? Any help will be highly appreciated. Thank you!

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    1. He is occasionally posting, but I do not know unfortunately the contact information. We can find a similar comment about Pancolar at MFlenses. Sorry.

      I also confirmed in official book of Zeiss(Fabrikationsbuch Photooptik, Carl Zeiss Jena von 1927 bis 1991: http://www.exaklaus.de/neueb.htm) that there was model change at serial number 8552600.

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