Minox spy cameras: How's their mechanical heart ticking?

Pride

A
Pride

  • 0
  • 0
  • 33
Paris

A
Paris

  • 3
  • 0
  • 129
Seeing right through you

Seeing right through you

  • 4
  • 1
  • 171
I'll drink to that

D
I'll drink to that

  • 0
  • 0
  • 119
Touch

D
Touch

  • 1
  • 2
  • 123

Recent Classifieds

Forum statistics

Threads
198,397
Messages
2,774,133
Members
99,605
Latest member
hrothgar41
Recent bookmarks
0

tjwspm

Member
Joined
Dec 23, 2023
Messages
317
Location
Germany
Format
Sub 35mm
The Minox A IIIs, B, BL, and AX use purely mechanical shutter systems to control light for their tiny 8x11mm film. No electronics — just intricate engineering! How do these cameras handle shutter speeds from 1/2 to 1/1000 seconds, plus B and T settings, to achieve perfect exposures?

This question had been nagging at me. Not just out of curiosity about how the designer had managed to achieve this. That too. But what about the Minox cameras where the shutter speeds are incorrect? This is an issue that preoccupies many Minox enthusiasts. If you want to repair it and not just blindly try things out, you need to know what's going on inside the camera.

After a year and a half of reverse engineering, I finally cracked the code of this mechanism. Since my memory isn't very good, I had to write everything down so I wouldn't forget it. Besides, some things only become clear to me when I try to put them into words. I now would like to share the result with you. My article includes many photos and videos —never before seen online or in books — showcasing the system in action. As far as I know, there’s no other technical description like this out there.

Minox exposure system intro s.jpg


I would greatly appreciate your feedback on the clarity and completeness of the article, as well as any further suggestions on other Minox topics – please let me know what you think!

P.S. This is just my hobby — nothing commercial! I write mainly for myself, so that I don't forget the insights I've gained and so that I can share my enthusiasm with everyone who is interested in historical (miniature) cameras.

Click here for the full story:
Trigger Warning: Contains highly technical details that might send tech geeks into excitement! 😉
 

Andreas Thaler

Subscriber
Joined
Nov 19, 2017
Messages
4,709
Location
Vienna/Austria
Format
35mm
Thank you for presenting your work as well as your expertise and for the effort you put into this forum.

At the same time, I find it a shame that the interest is only measured by the number of views.
 
Last edited:
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab Blue Moon Camera & Machine
Top Bottom