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Metabones Nikon F/G Mount to E Mount Speed Booster ULTRA 0.71x

Metabones
Abel Code: MB-SPNFG-E-BM2
Mfr. Code: MB_SPNFG-E-BM2
In Stock
Available In Store | NY
Description
This mount adapter 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.
Key Highlights
  • Adapts Nikon F / G Mount to Sony E Mount
  • Reduces crop factor from 1.5x to 1.07x
  • Magnification of 0.71x
$479.00
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Overview

Overview

The Metabones Nikon F/G Mount to E Mount Speed Booster ULTRA 0.71x features an 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 original Metabones Speed Booster, the Speed Booster ULTRA has a magnification of 0.71x, effectively reducing 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 is subsequently well-corrected for use with virtually all Full Frame SLR lenses, regardless of exit pupil distance.

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, producing 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.

Features:

  • Aperture ring covers a 8-stop range markings, clearly indicating actual number of f-stops
  • Compatible with both Nikkor G lens & F lens (include non-AI & AI lens mounts)
  • Advanced 5 Element/4 Group optical design incorporates ultra-high index tanatalum-based optical glass by Caldwell Photographic in the USA
  • Increases maximum aperture by 1 stop
  • Increases MTF
  • Makes lens 0.71x wider
  • The tripod foot is detachable and compatible with Arca Swiss, Markins, and Photo Clam ball heads (not included)

Usage Notes:

  • Before mounting your lens to the adapter, please make sure that the f-stop of aperture ring on the adapter is turned to "7" (i.e. mounting your lens to the adapter while only the aperture ring in the adapter is full closed)
  • This mount allows manual aperture control, only, and does not support electronic aperture control
  • Disclaimer: Metabones is not licensed, approved or endorsed by Sony or Nikon

NOTE: This Speed Booster ULTRA is NOT fully compatible with Full Frame Sony A7, A7R and A7S; when used with Sony A7, A7R or A7S, the camera is required to be configured in "APS-C Size Capture" mode.

IMPORTANT NOTE: The Speed Booster ULTRA is not compatible with the Nikkor 21mm f/4 or 20mm f/2.8 AI-S lens.

What's in the Box

  • Tripod Foot (Detachable)
  • Rear Cap
  • Front Cap
  • Metabones Nikon F/G Mount to E Mount Speed Booster ULTRA 0.71x
Specifications

Specifications

Key Highlights

  • Adapts Nikon F / G Mount to Sony E Mount
  • Reduces crop factor from 1.5x to 1.07x
  • Magnification of 0.71x
  • Increases max. aperture by 1 stop

Lens Characteristics

Max Aperture F-stop:
f/0.9 - when using f/1.2 lens
Elements & Groups:
5 elements in 4 groups
Magnification Ratio:
0.71x

Mount / Optical Lens Adapters

Adapter Mount Side B (Camera):
E
Adapter Mount Side A (Lens):
G
F
Adapter Type:
Optical Adapter
Mount Adapter

Shipping

Width:
4.3 in
Height:
2.4 in
Length:
4.3 in
Weight:
0.8 lb
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