Barmy mount adapter lets you put medium-format lenses on Nikon APS-C or full-frame cameras

Shoten Mount Adapter GXTZ next to GF lens and a Nikon camera
(Image credit: Shoten Koubou Co)

And I thought Marvel Comics’ Spider-Man/Superman was the wackiest crossover event of the year, but that was before I came across this mount adapter designed to mount Fujifilm GFX-compatible lenses on Nikon Z-Series cameras. To be clear, this isn’t an official product from Fujifilm or Nikon; the Mount Adapter GXTZ is made by third-party manufacturer Shoten Koubou Co and was released on April 24, with an RRP of JP¥72,000 (roughly $450 / £330 / $630).

The mount adapter allows you to put Fujifilm GF lenses on Nikon Z-Series cameras, with electronic contacts to support both AF acquisition (including face/eye detection) and camera-to-lens aperture control. The mount also supports both optical and in-body image stabilization and allows the use of a lens’s Fn button. If you’re using a fully manual GFX-compatible lens, the adapter will also allow the camera to gather EXIF data.

Shoten Mount Adapter GXTZ used to attach GF lenses to two Nikon cameras

(Image credit: Shoten Koubou Co)

The adapter measures approximately 77x11mm and weighs 78g. It comes with front and rear caps, with the latter including a USB-C port for firmware updates. The question on my mind is who would want such an accessory?

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I can’t imagine many Nikon Z-Series owners flocking to purchase GF glass, just as I couldn’t imagine many GFX owners rushing to purchase Z-Mount glass if the situation were reversed. However, I guess anyone lucky enough to own both systems can enjoy more use out of their GF optics and that can only be a good thing, because they’re fantastic.

Another possibility would be videographers. Nikon has yet to officially launch any cinema lenses for Z Mount – the closest being the Nikon Z 28-135mm f4 PZ – and this adapter would grant access to the mighty GF 32-90mm T/3.5 PZ OIS WR.

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Mike Harris
How To Editor

Mike studied photography at college, honing his Adobe Photoshop skills and learning to work in the studio and darkroom. After a few years writing for various publications, he headed to the ‘Big Smoke’ to work on Wex Photo Video’s award-winning content team, before transitioning back to print as Technique Editor (later Deputy Editor) on N-Photo: The Nikon Magazine.

With bylines in Digital Camera, PhotoPlus: The Canon Magazine, Practical Photography, Digital Photographer, iMore, and TechRadar, he’s a fountain of photography and consumer tech knowledge, making him a top tutor for techniques on cameras, lenses, tripods, filters, and more. His expertise extends to everything from portraits and landscapes to abstracts and architecture to wildlife and, yes, fast things going around race tracks...

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