The Riga Minox Shutter: A Deep Dive into a Mechanical Marvel

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tjwspm

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The Riga Minox, a miniature camera renowned for its compact size and deleloped in 1936, houses a shutter mechanism that is as fascinating as it is functional.

While the shutter mechanisms of later Minox models, such as the A IIIs, B, and BL, have been somewhat documented, the inner workings of the Riga Minox remained a mystery. Despite extensive research and inquiries, no explanation could be found. So I embarked on a reverse engineering project to uncover the secrets of this shutter.

Unlike subsequent Minox models, the Riga Minox employs a single-blade guillotine shutter. This simplified design, while seemingly less complex, is no less effective in controlling exposure time. The shutter's operation is governed by a series of precisely engineered components that work in harmony to deliver accurate and consistent results.

VEF Riga Minox shutter 002.jpg


The Riga Minox shutter is a testament to Walter Zapp's engineering prowess. Its ingeniously simple design combined with its precision is a remarkable achievement. By understanding the mechanics of this small but sophisticated mechanism, we gain a deeper appreciation for the craftsmanship that went into creating this iconic camera. While modern cameras rely heavily on electronics, the Riga Minox serves as a reminder of the beauty and ingenuity of purely mechanical systems.

To understand the Riga Minox shutter, we must delve into its fundamental principles: Cocking the Shutter, Opening the Lens, Exposure Control, Closing the Lens. Read on here:
 
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tjwspm

tjwspm

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I wonder why the shutter was completely redesigned for the successor models of the Riga Minox. In my experience, the Riga shutter is very accurate, reliable and durable. What could have been the reason?
 

Andreas Thaler

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I wonder why the shutter was completely redesigned for the successor models of the Riga Minox. In my experience, the Riga shutter is very accurate, reliable and durable. What could have been the reason?

Since you are the Minox master, you have to answer this question 😃
 
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tjwspm

tjwspm

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I have my suspicions, but firstly I can be wrong and secondly there are often aspects that I would never have thought of myself 😇
 
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