Canon Lens RF2X, RF 2x Extender

• Design for attaching full-frame PL Prime Lens to Sony E-mount cameras/camcorders
• Increase maximum aperture by 1 stop.
• Increase MTF.
• Makes lens 0.71x wider.
• Advanced 5-element/4-group optical design incorporating ultra-high index tantalum-based optical glass by Caldwell Photographic in the USA (patent granted).
• Positive-lock PL lens mount.
• Felt material flocked inside the opening to reduce internal reflection.
• Compatible with Sony FS7 Mark II camera.
• The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads.

• • • • Increase maximum aperture by 1¹/₃ stop. (with a maximum output aperture of f/0.80)
      • Increase MTF.
      • Makes lens 0.64x wider.
      • Optics designed by Caldwell Photographic in the USA (patent granted).
      • When using with “passive” (without electronic control pin) MFT camcorders/cameras, such as BMCC 2.5K MFT and Digital Bolex D16 MFT, the Speed Booster must be powered by external power source via Micro-USB socket. Input Voltage is 5V DC.  (Battery is NOT included in the box).
      • When using with “active” (with electronic control pin) MFT camcordrs/cameras, such as BMPCC MFT, the Speed Booster can be powered by camera body. no external power source required.
      • Build-in electonics to control lens aperture.
      • The Lens aperture is set by the dial button on the adapter.
      • High performance 32-bit processor and efficient switched-mode power supply.
      • The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads.
      • Flocking material coating inside the inner hole to reduce the internal reflection.

To clear up any potential confusion, this is NOT Sony Alpha, but Alpa of Switzerland. You will most likely be using the Kern Macro Switar 50mm f/1.8 or f/1.9 apochromat lens on this adapter.