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Metabones has announced the release of the NF – GFX mount Expander 1.26x, a new adapter that allows Nikon G-mount lenses to be mounted to Fuji G-mount (GFX) camera systems while also magnifying the image circle by 1.26x, making it so the lenses retain their native diagonal field of view across formats.
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The adapter, which is constructed of an aluminum alloy and chromium-plated brass, features a detachable Arca-Type tripod foot and is comprised of five optical elements in three groups, including elements made of ‘ultra-high index Lanthanum-based optical glass as well as one element made of fused silica.’ The adapter uses Metabones’ manual G aperture adjustment, which uses ‘the same angular throw distance as earlier Nikon Ai/AiS lenses, which features a linearized f-stop adjustment as a function of aperture ring adjustment angle.’ The mechanism is also clickless for convenience when using it for cinematography.
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Using examples provided by Metabones, the NF – GFX mount Expander 1.26x would effectively turn a a 24–70mm F2.8 lens into a 30–88mm F3.5 lens, and a 70–200mm F2.8 lens into an 88–252mm F3.5 lens. Since this is only a focal extender and not a speedbooster, the lenses will lose 2/3 a stop of light, meaning F1.4 lenses drop to F1.8 and F2.8 drop to F3.5.
In addition to Nikkor DX lenses and third-party APS-C lenses will likely have strong vignetting with using them with the adapter and a number of other lenses have limitations, as noted by Metabones in the below graphic:
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The NF – GFX mount Expander 1.26x is available now for $ 519. Metabones is also selling a straight NF — GFX adapter without the optical elements for $ 179.
Articles: Digital Photography Review (dpreview.com)