Nikon G to Nikon Z-mount Speed Booster ULTRA 0.71x

Key Features

  • Nikon F mount lens to Nikon Z-mount APS-C camera (like Nikon Z50) ;
  • Compatible with both Nikkor G lens &  F lens (include non-AI & AI lens mounts) ;
  • Industry's best aperture clickless ring covers an 8-stop range marking, clearly indicating actual number off-stops. No more guesswork. (Patent granted) ;
  • Parented 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA ;
  • Increase maximum aperture by 1 stop ;
  • Increase MTF ;
  • Makes lens 0.71x wider ;
  • Aluminum Alloy and Brass Construction with Chromium Plating ;
  • Rubber gasket protects the Z-mount connection from dust and moisture ;
  • Satin Surface Finish ;
  • Detachable Arca-Type tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads(clamp directly or attach to quick release plate by a 1/4"-20 screw).

 

Compatibility List of Lens

  • Nikkor F-mount lens

include Nikkor G series, AF-D, AI-P, AIS, AI and non-AI lens only.

 

Unsupported List 

  • Nikkor DX lenses and third-party lenses designed for APS-C format DO NOT WORK AT ALL when used in conjunction with Speed Booster® due to the limitation of image coverage.
  • Nikkor 2.1cm f/4
  • Nikkor AI-S 20mm f/2.8
  • Nikkor E series lens, the diaphragm blades are not operated by mechanical linkage levers, such as Nikkor 105mm f/1.4E, Nikkor AF-S 70-200mm f/2.8E FL ED VR, Nikkor AF-S 16-80mm f/2.8-4E ED DX VR, and Nikkor AF-S 24-70mm f/2.8E ED VR, Nikkor AF-S 600mm f/4E FL ED VR and PC-E 19mm, 24mm, 45mm, 85mm T/S Lens, etc.
  • This adapter is manual aperture control. It does NOT support electronic aperture control, AF and image stabilization.

 

 



Description

Speed Booster ULTRA

Sharper corners, less distortion, reduced vignetting 

New optical design:  advanced 5-element/4-group optical design incorporating ultra-high index tanatalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting.

Like the revolutionary original Metabones Speed Booster announced in January 2013, the Speed Booster ULTRA has a magnification of 0.71x, and so it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x.  However, the new ULTRA design makes very effective use of exotic materials at the furthest limit of glassmaking technology, and as a result is well corrected for use with virtually all full-frame SLR lenses regardless of exit pupil distance. Thus, the Speed Booster ULTRA performs extremely well with professional-grade f/2.8 zoom lenses such as the 24-70mm f/2.8 and 70-200mm f/2.8 zooms by Canon and Nikon to produce 17-50mm f/2.0 and 50-142mm f/2.0 high-speed zooms, respectively.  Similarly, high-speed fixed focal length lenses such as a 50mm f/1.2 will be transformed into a 35.5mm f/0.9 lens with excellent contrast and resolution from the center all the way to the edges of the image. (More information can be found in the press release here)

 


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Disclaimer: we are NOT licensed, approved or endorsed by Nikon.


 


Why Metabones®?

Since its inception, Metabones has been designing and manufacturing lens adapters recognized among professionals and enthusiasts as leaders in design and workmanship.

Contrary to the popular trend of other factories using an aluminum ring painted black on the camera-body-side, we instead take no short-cut but use precision-machined brass with chromium plating on both the camera-body and the lens sides of our adapters, in order to ensure smooth mounting, great appearance, and durability. The lens side of the adapter features a strong leaf-spring structure, strengthening the adapter-lens connection and ensuring tightness of the lens in order to reduce wear and prevent focus errors and optical alignment issues from appearing.

Metabones uses matte-black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens.

All Metabones Adapters follow this tradition of uncompromising precision, robust build quality and outstanding finish. Our new Smart AdapterTM series of products add industry-leading electronic interfacing technology from Canada, with true electronic control of the lens' aperture directly from the camera body.

Features

Our Smart AdapterTM  series adapters have the following additional features