Metabones Nikon G to E-Mount Speed Booster

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  • Industry's best aperture ring
  • Covers a 8-stop range with half-stop markings
  • Clearly indicating actual number of f-stops
  • Compatible with both Nikkor G lens &  F lens (including non-AI & AI lens mounts)
  • Increase maximum aperture by 1 stop
  • Increase MTF
  • Makes lens 0.71x wider
  • Optics designed by Caldwell Photographic
  • Tripod foot is Detachable
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Our Price: $429.00

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The Metabones Nikon G to E-Mount Speed Booster (MB_SPNFG_E_BM1) increases maximum aperture by 1 stop. Additionally, it also increases the MTF and makes the lens wider by a factor of 0.71x. It features a clickless 8-stop aperture ring with half-stop markings that clearly indicates the actual number of stops. Crafted with a matt black finish, it helps in achieving the best image quality by reducing the internal reflections. It makes the lenses reach infinity focus while also preserving the correct registration distance requisite to support CRC lenses or lenses with floating elements. The detachable tripod foot is compatible with Arca Swiss, Markins, and Photo cam ball heads.



The Speed Booster ULTRA is NOT fully compatible with full-frame Sony A7, A7Rm and A7S cameras. When the Speed Booster is used with the FE mount cameras, the camera needs to be used in the "APS-C Size Capture" mode. 

Before mounting your lens to the adaptor, please ensure that the f-stop of the adapter is turned to "7".

This adapter DOES NOT support electronic aperture control. 


Nikkor 2.1 cm f/4

Nikon 20mm f/2.8 AI-S

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Physical Specifications
Color: Black
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Brand: Metabones

In The Box

  • Metabones Nikon G to E-Mount Speed Booster MB_SPNFG_E_BM1

Included in Rental:

  • Metabones Nikon G to E-Mount Speed Booster
  • Case
  • Caps
  • Lens Support Bracke

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