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Kamerastore Digital Database

Nikon PK-3 Extension Tube - Accessory

Nikon PK-3 Extension Tube - Accessory

27.5mm auto extension tube for Pre-AI lenses by Nikon.

  • Size: 27.5 x 64.5mm
  • Weight: 112g
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Nikon F

Nikon introduced their first SLR, the Nikon F, in 1959. Alongside it they unveiled a series of lenses and a new lens mount that would carry them to professional success for the next decades. To this day, all Nikon DSLRs use the Nikon F mount.

In the beginning, Nikon lenses communicated aperture information to the body using a metal coupling fork, affectionately known as "bunny ears". Soon after, Nikon began using a similar system that automatically told the camera the maximum aperture of the lens. This Automatic Indexing (AI) system stuck around for decades in lenses and is still found on Nikon's high-end professional DSLRs even though new lenses communicate this information electronically.

With only minor compatibility issues (don't use a pre-AI lens on AI bodies or modern digital cameras), Nikon F lenses and bodies are pretty much interchangeable.

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Nikon PK-3 Extension Tube - Accessory Availability & Price History
Date Sold SKU Quality Control Price Image
Available T46084 €25,00 Nikon PK-3 Extension Tube
Available T51108 €25,00 Nikon PK-3 Extension Tube
25 Mar 2024 E19643 € 25,00 Nikon PK-3 Extension Tube - Accessory Image
05 Dec 2023 T57277 € 25,00 Nikon PK-3 Extension Tube - Accessory Image
27 Aug 2023 T31005 € 25,00 Nikon PK-3 Extension Tube - Accessory Image
17 Aug 2023 T12511 € 17,99 Nikon PK-3 Extension Tube - Accessory Image
22 Jun 2022 T11935 € 25,00 Nikon PK-3 Extension Tube - Accessory Image
25 Feb 2022 T12140 € 25,00 Nikon PK-3 Extension Tube - Accessory Image
15 Dec 2021 A69416 € 25,00 Nikon PK-3 Extension Tube - Accessory Image
22 Nov 2021 A60366 € 5,63 Nikon PK-3 Extension Tube - Accessory Image