Cosina Auto Extension Tube Set - Accessory

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Model Details

Set of 30mm, 20mm, and 11mm extension tubes made for M42 screw mount cameras and lenses by Cosina. Metal body available in black.

  • Size: 48 x 65 mm
  • Weight: 88g

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Brand
Cosina
System
M42
Usage
Film

M42

M42 (also known as Pentax Universal) is a screw-type lens mount for SLR cameras. It was originally developed by Carl Zeiss but was adopted by many other manufacturers throughout Europe and Asia. Other notable M42 manufacturers include Praktica, Fujica, Pentax, and Zenit.

M42 is a very simple system with a long flange distance, making adapters simple and common. Many film manufacturers made adapters for mounting M42 lenses to their systems, and they can also be used with modern SLR & mirrorless cameras quite easily. Because it was used by so many companies, there are a huge number of M42 lenses out there, covering every focal length and level of optical quality.

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Cosina Auto Extension Tube Set - Accessory Price History
Date Sold SKU Quality Control Price Image
30 Mar 2025 T84566 € 9.00 Cosina Auto Extension Tube Set - Accessory Image
11 Jan 2025 T89797 € 15.89 Cosina Auto Extension Tube Set - Accessory Image
19 Jul 2024 T64706 € 15.00 Cosina Auto Extension Tube Set - Accessory Image
10 Jul 2024 T72820 € 15.00 Cosina Auto Extension Tube Set - Accessory Image
06 Apr 2024 T27772 € 4.50 Cosina Auto Extension Tube Set - Accessory Image
16 Nov 2022 T23930 € 15.00 Cosina Auto Extension Tube Set - Accessory Image
23 Feb 2022 A76270 € 15.00 Cosina Auto Extension Tube Set - Accessory Image