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Matte black cylindrical adapter with Nikon G and Z mounts visible

Metabones

Metabones Nikon G to Z Speed Booster ULTRA 0.71x Matte Black camera accessory

SKU CH-NVX5-34D7Q

Adapter converts Nikon G lenses to Z-mount with 0.71x magnification, 5-element optics, and wider aperture for sharper, brighter images

  • Sharper corners with 5-element, 4-group optical design
  • Wider field of view via 0.71x magnification factor
  • Faster aperture: f/2.8 lenses become f/2.0
  • DX crop reduced from 1.5x to 1.07x
  • Durable aluminum alloy and brass construction

Nikon G to Z adapter for DX shooters

This Metabones Speed Booster ULTRA mounts Nikon G lenses on Nikon Z bodies with a 0.71x optical element. It is built for photographers using DX-format mirrorless cameras who want a wider field of view and a brighter effective aperture. The matte black barrel uses aluminium alloy and brass for a secure, durable connection.

Simple bayonet fit with electronic limits

The adapter locks onto the Z mount and accepts the G lens with a standard twist; no tools or firmware updates are required. Aperture control stays on the lens, but autofocus and electronic contacts are not supported, so exposure metering and focus must be managed manually. Vignetting is minimised by the 5-element, 4-group design.

0.71x magnification defines the crop shift

The single deciding specification is the 0.71x factor, which reduces the DX crop from 1.5x to approximately 1.07x. A 24-70mm f/2.8 becomes a 17-50mm f/2.0, a 70-200mm f/2.8 becomes a 50-142mm f/2.0, and a 50mm f/1.2 becomes a 35.5mm f/0.9. Buyers needing autofocus or full-frame coverage should look elsewhere.

Highlights

  • Sharper corners with 5-element, 4-group optical design
  • Wider field of view via 0.71x magnification factor
  • Faster aperture: f/2.8 lenses become f/2.0
  • DX crop reduced from 1.5x to 1.07x
  • Durable aluminum alloy and brass construction

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the adapter is reducing the crop factor to 1.07x after mounting it on my DX camera?

Mount a known lens, frame a reference subject at the same distance, and compare the field of view with the 1.07x crop factor specification.

What comes in the box and do I need to buy a separate lens foot or tripod collar?

The adapter ships as a single matte-black unit; no extra lens foot or tripod collar is included or required for normal use.

Which version should I choose if I want a 50 mm f/1.2 lens to behave like a 35.5 mm f/0.9 lens on my Z-mount body?

This single 0.71x ULTRA model delivers that exact conversion; no other magnification version is offered for Nikon G to Z.

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