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Nikon AS-4 Flash Unit Coupler - Accessory

Nikon AS-4 Flash Unit Coupler - Accessory

Flash coupler made by Nikon. Allows the use of flashes without a cable attachment on Nikon Speedlight SB-15, SB-16B, SB-19, SB-20, SB-21B, SB-22, SB-23, SB-24, and other electronic flashes with ISO-type mounting on Nikon F3 camera. Black metal/plastic body.

  • Size: 34 x 30mm
  • Weight: 27g
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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 AS-4 Flash Unit Coupler - Accessory Availability & Price History
Date Sold SKU Quality Control Price Image
30 Nov 2023 T58233 € 25.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
30 Jul 2023 T49093 € 25.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
31 Mar 2023 T39402 € 25.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
29 Mar 2023 E18419 € 35.93 Nikon AS-4 Flash Unit Coupler - Accessory Image
27 Mar 2023 T39401 € 25.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
31 Oct 2022 T28618 € 25.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
26 Aug 2022 T22040 € 15.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
08 Aug 2022 T18333 € 15.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
19 Jul 2022 T18331 € 29.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
08 Jul 2022 T18334 € 29.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
16 Jun 2022 T15043 € 29.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
23 May 2022 T15130 € 29.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
05 Feb 2022 A72141 € 29.00 Nikon AS-4 Flash Unit Coupler - Accessory Image
24 Nov 2021 A73566 € 23.20 Nikon AS-4 Flash Unit Coupler - Accessory Image