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Goltz-Breutmann Mentor Studio Reflex

Meine Goltz & Breutmann Mentor Studio Reflex im Einsatz bei einem Porträtshooting mit Reinhold.

Goltz & Breutmann Mentor Studio Reflex

Im Jahre 2016 habe ich sie verschimmelt und recht herunter gekommen in einer Garage im Hammer Westen gefunden. Nach einer umfassenden Kamerareinigung nach allen Regeln der Kunst und der Pflege des Leders ist sie wieder einsatzbereit.

Denn die Technik funktioniert nach wie vor einwandfrei! 🙂

Und das Beste ist: Es ist eine Spiegelreflex!!!

Das bedeutet: Nach dem Umbau auf 6 x 7 cm Rollfilm kann ich sie zur Not auch aus der Hand für solch ein Porträtshooting einsetzen! Der Hammer! 🙂

Verschluss spannen, Film transortieren und den nächsten Schuss platzieren OHNE zwischendurch den Schieber betätigen oder eine Filmkassette wechseln zu müssen. SO muss das! 🙂

Dazu ist sie mit dem recht selten produzierten (nur 666 mal!), aber sehr lichtstarken Carl zeiss Jena 1:3,5/250 mm ausgestattet. Geringe Schärfentiefe ist damit kein Problem. DIe Schärfentiefe entspricht etwa Blende 1,8 an einer Vollformat-Kamera. 🙂

Schau dir den Film an und erfreue dich mit mir daran, dass solch alte Technik immer noch funktioniert. 🙂

Falls du Fragen zur Kamera und ihrer Funktionsweise hast, stelle sie doch unten als Kommentar.

 

Goltz & Breutmann Mentor Studio Reflex: English version

My Goltz & Breutmann Mentor Studio Reflex in action during a portrait shoot with Reinhold.

In 2016, I found the camera moldy and quite come down in a garage in my hometown. After a comprehensive camera cleaning according to all the rules of the art and the care of the leather, it is ready for use again.

 The technology still works flawlessly! :-)

And best of all, it’s a mirror reflex !!!
This means: After the conversion to 6 x 7 cm roll film I can use it out of hand for such a portrait shoot! Wow! :-)

Tense the shutter, transort the film and place the next shot WITHOUT pushing the separator or changing a film cassette in between. Thats how it is supposed to be! :-)

It is equipped with the quite rarely produced (only 666 times!), but very bright Carl Zeiss Jena 1: 3.5 / 250 mm. Shallow depth of field is no problem. The depth of field is approximately 1.8 on a full-frame camera. :-)

Watch the movie and enjoy with me that such old technology still works. 🙂

If you have questions about the camera and how it works, leave it as a comment.

7 Kommentare

  1. Dear Karsten

    I came across your nice work the Mentor Reflex. I just got a camera similar to yours, and the technicalities confuse me. Could I ask you how you use the lower tension adjustment? What does the numbers mean and how do I set the speed adjuster on top according to the lower tension setting.

    Very grateful for any help.

    Sincerely, Bjarte Bjørkum

    • Hey Bjarte,

      the higher the number, the faster the shutter speed. So if the tension on the shutter goes down, you can tweak it with this adjustment option.

      This works regardless of the shutter speed setting. First you should set the desired shutter speed as normal.
      Only if the tension of the shutter spring provides longer exposure times, you should increase the tension with the numbers.

      I publish here the photo of this spring, which you have sent by email. This way, all other mentor owners can get an idea of it. Thank you for this! 🙂
      Spring Mentor Studio Reflex
      Photo: Daniel Kapusta

      Bye, Karsten

  2. Thanks a lot for your research. Next step now will be to understand the function of the N (or is it a Z?) on the lower tension adjustment wheel.

    • I think this is the position “normal” or “null”.
      No. 1 is the one with the lowest tension for the spring. The higher the number, the stronger the spring will be tensed.

      I tried it on my camera: If I set to 1, the closing time is very slow and the shutter will not run to the end.
      The higher I put the numbers, the faster the shutter runs.

  3. Sam Sam

    Hi, I’m the guy on Youtube known as Sammy. This is the Mentor Studio 9×12 I bought recently. I can’t find any kind of manual for it. There’s a little lightning bolt on the shutter speed selector next to the 1/5 mark. At first I thought the 3 2 1 2 3 dial might be a shutter speed multiplier/divider, but now I think it might be a flash sync selector like my old Nikon F has ( 4 different flash sync settings). It came with 2 different hoods and a removable rear focusing glass, but unfortunately no plate holders. I’m going to try and build some holders and make some dry plates. And get the shutter to stop hanging up and timed. Lots to do, but I’m hopeful. Beautiful cameras, these old monster SLRs.
    Thanks for offering to help.
    Sam

    • Hey Sam,

      I really don’t know what is the use of the knob.

      I asked y guy from http://www.kameramuseum.de/index.htm (virtual camera museum) for you. May be the answer is comming soon …

      I’ll be back on this issue when I receive an answer, ok?!

    • Hi Sam,

      I have 2 answers for you:
      1. Some people think, it is a flash synchro knob as you thought.

      But this ist the answer from the camera museum guy. I think, this is it! 🙂
      2. It could be for longer exposure times from 1/4 to 3 sec. In german language, this knob is called „Langzeitwerk“.
      It was often broken and the oil hardened fast. It was not used often usually.
      Before you can use it, you have to switch to „Z“ at the exposure time knob.

      Your model should be of the years 1950 – 1965.
      I hope that helps you. 🙂
      If you get the function back, feel free to show some photos. 🙂

      ===============================
      Hier nochmal die Original-Antwort von Herrn Tauber vom Kameramuseum:

      Ich habe einen Freund (Fotohändler und Fotograf) um Rat gefragt. Hier seine Antwort:
      … in schwacher Erinnerung glaube ich das es das Langzeitenwerk war: 1/4 Sec. bis 3 Sec.
      Es war oft defekt und verharzte schnell. Nutzte kaum einer! Man musste vorher von Moment auf Zeit umstellen. (Oberes Rad)
      (Einstellrad für Langzeitwerk) Das gezeigte Modell dürfte aus den Jahren 1950 – ca. 65 stammen.

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