Metabones Nikon G to Sony E Speed Booster ULTRA 0.71x reduces crop factor, increases aperture by 1 stop, and improves image sharpness for Nikon lenses on Sony E-mount cameras.

Metabones Nikon G to Sony E Speed Booster ULTRA 0.71x (MB_SPNFG-E-BM2)

Product ID: 22420
€ 639,94 tax incl.

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SKU: 22420
Condition: New product
Manufacturer: Metabones
639.94
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Type of ProductAdapters for lens
Adapter is for camerasSony E
Adapter is for camerasNikon F
Adapter is for lensesNikon G
Adapter is for lensesNikon
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Metabones Minolta MD to Sony E Speed Booster ULTRA Adapter 0.71x (MB_SPMD-E-BM2)

Metabones Minolta MD to Sony E Speed Booster ULTRA Adapter 0.71x (MB_SPMD-E-BM2)

Metabones Minolta MD to Sony E Speed Booster ULTRA 0.71x adapter increases aperture by 1 stop and widens field of view for Sony E-mount cameras.

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Product details

Optical Design and Performance

The Metabones Nikon G to Sony E Speed Booster ULTRA 0.71x (MB_SPNFG-E-BM2) features an advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass. This design achieves extraordinary optical performance with improved corner sharpness, reduced distortion, and minimized vignetting.

With a magnification factor of 0.71x, it effectively reduces the crop factor of mirrorless cameras with DX-sized sensors (such as Sony E-mount and Fuji X-mount) from 1.5x to approximately 1.07x. The ULTRA design uses exotic materials at the forefront of glassmaking technology, allowing excellent correction for virtually all full-frame SLR lenses regardless of exit pupil distance.

Lens Compatibility and Performance Enhancement

  • Compatible with both Nikkor G lenses and F lenses, including non-AI and AI mounts.
  • Transforms professional-grade f/2.8 zoom lenses (e.g., 24-70mm f/2.8 and 70-200mm f/2.8 by Canon and Nikon) into high-speed zooms with apertures around f/2.0 and focal lengths of 17-50mm and 50-142mm respectively.
  • Converts high-speed prime lenses such as a 50mm f/1.2 into a 35.5mm f/0.9 lens, delivering excellent contrast and resolution from center to edges.

Key Features

  • Industry-leading aperture ring with an 8-stop range marking, clearly indicating the actual number of f-stops (patent pending), eliminating guesswork.
  • Increases maximum aperture by 1 stop, enhancing light gathering capability.
  • Improves Modulation Transfer Function (MTF) for sharper images.
  • Makes lenses 0.71x wider, effectively reducing focal length.
  • Detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads.

Compatibility Notes

  • Not fully compatible with full-frame Sony A7, A7R, and A7S cameras. When used with these models, the camera must be set to "APS-C Size Capture" mode.
  • Incompatible lenses include Nikkor 2.1cm f/4 and 20mm f/2.8 AI-S lenses.

Usage Tips and Additional Information

  • Before mounting your lens to the adapter, ensure the aperture ring on the adapter is set to "7" (fully closed aperture) to avoid mounting issues.
  • This mount provides manual aperture control only and does not support electronic aperture control.
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