Pentax 6x7 Extension Tube Set (Outer Bayonet) - Accessory

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Model Details

Extension tube set for the Pentax 6x7 outer bayonet lenses made by Pentax. Consists of two rings, 23mm and 46mm. Meant for lenses from 400mm upwards. Metal body available in black.

  • Weight: 301g (both)
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Pentax 6x7

The Pentax 6x7 was introduced in 1969 as an alternative to modular SLRs on the market. The 6x7 instead emulates the handling of a 35mm SLR, just scaled up to fit the 6x7cm negative.

All generations of Pentax 6x7 cameras feature electronically-controlled focal plane shutters that can reach speeds up to 1/1000s. The one major downside of the design is the slow flash sync compared to the leaf shutters in Mamiya and Hasselblad lenses.

Pentax offered interchangeable finders for the 67 system including TTL prisms, waist level finders, chimney finders, and non-metered prisms. The 67 II is also capable of TTL aperture priority autoexposure with the right prism.

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Pentax 6x7 Extension Tube Set (Outer Bayonet) - Accessory Availability & Price History
Date Sold SKU Quality Control Price Image
14 Dec 2025 T90218 € 99.00 Pentax 6x7 Extension Tube Set (Outer Bayonet) - Accessory Image