Metabones Speed Booster XL - linsadapter

Metabones Speed Booster XL - linsadapter MB_SPEF-M43-BT3
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MetabonesTillverkareMetabonesArtnr
MB_SPEF-M43-BT3
  • Increase maximum aperture by 1 1/3 stop
  • Increase MTF
  • Makes lens 0.64x wider
  • Patented 6-element/4-group optical design by Caldwell Photographic in the USA
  • Supports 4k video mode with DX lenses
  • Auto focus on Panasonic Micro Four Thirds cameras
  • Iris/aperture controlled by the camera body
  • Image stabilization (IS) lens support
  • Electronic manual focusing
  • EXIF - focal length, aperture, zoom range
  • Distance and zoom display on camcorders - requires lenses supporting distance information
  • The interior is painted with flocking coating to further reduce the internal reflection
A Micro-4/3 mount Speed Booster adapter designed exclusively for the Panasonic GH4 and other selected Micro Four Thirds cameras, with a magnification of 0.64x. The Speed Booster XL 0.64x uses an advanced 6-element optical design to achieve extraordinary optical performance at apertures up to an incredible f/0.80, a record for Micro Four Thirds format.

The Speed Booster XL 0.64x reduces the full-frame crop factor of the Panasonic GH4 from 2.0x to 1.28x, thus effectively transforming these cameras into APS-H format. When the GH4 is used in Cinema 4k video mode the horizontal full frame crop factor is reduced from 2.34x to 1.50x, thus effectively transforming the GH4 into a super-35 format 4k cine camera. In addition, the speed of any attached lens is increased by 11/3 stops, with a maximum output aperture of f/0.80 when an f/1.2 lens is used. For example, a 50 mm f/1.2 becomes a 32 mm f/0.80, which is a faster aperture available for full size Micro Four Thirds format.

 

 
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