ARRI PL Lens to Canon RF-mount T CINE Speed Booster® ULTRA 0.71x II (EOS R)

Key Features

Features and Benefits

  • Design for attaching full-frame PL Prime Lens to Canon RF-mount cameras/camcorders ;
  • Increase maximum aperture by 1 stop;
  • Increase MTF;
  • Makes lens 0.71x wider;
  • The 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;
  • Rubber gasket protects the RF mount connection from dust and moisture;
  • Satin Surface Finish;
  • Aluminum Alloy and Brass Construction with Chromium Plating;
  • 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);



  • Metabones PL T CINE Speed Booster® adapters are designed exclusively for the Zeiss CP.2, CZ.2, and CP.3 lenses.  Important Notes: Do not attempt to mount the lenses not under the Lens Comparability List to the adapter - physical damage may occur.
  • Using the PL lens OTHER THAN the CP.2/ CP.3 lens, the lens's rear element CANNOT protrude from the flange more than 14.5mm. (note.1)
  • This product is designed for the APS-C format camera (eg. Canon EOS C70, R7, R10, R50 and RED Komodo, etc.) or using the APS-Crop mode of EOS R3, EOS R5, EOS R6, EOS R and EOS RP.


Lens Compatibility List

ZEISS Compact Prime lenses

ZEISS Cinema Zoom lenses

CP.2 15 mm / T2.9
CP.2 21 mm / T2.9
CP.2 25 mm / T2.1
CP.2 25 mm / T2.9
CP.2 28 mm / T2.1
CP.2 35 mm / T1.5
CP.2 35 mm / T2.1
CP.2 50 mm / T1.5
CP.2 50 mm / T2.1
CP.2 50 mm / T2.1
CP.2 85 mm / T1.5
CP.2 85 mm / T2.1
CP.2 100 mm / T2.1
CP.2 135 mm / T2.1
CP.3 15 mm / T2.9
CP.3 18 mm / T2.9
CP.3 21 mm / T2.9
CP.3 25 mm / T2.1
CP.3 28 mm / T2.1
CP.3 35 mm / T2.1
CP.3 50 mm / T2.1
CP.3 85 mm / T2.1
CP.3 100 mm / T2.1 CF9
CP.3 135 mm / T2.1
CZ.2 15 – 30 mm / T2.9
CZ.2 28 – 80 mm / T2.9
CZ.2 70 – 200 mm / T2.9



(1) The Metabones PL T CINE Speed Booster adapters are designed exclusively for the Zeiss CP.2, CZ.2, and CP.3 lenses. If using the PL lens other than the CP.2/ CP.3 lens listed in the compatibility list, the lens's rear element CANNOT protrude from the flange more than 14.5mm. Do not attempt to mount the lenses not under the Lens Comparability List / the protrusion of the lens that exceeds 14.5mm to the adapter - physical damage may occur.



Metabones® Speed Booster® ULTRA 0.71x for E-Mount and X-mount cameras

Always Enhance and Never Degrade the Performance of the Attached Master Lens.

Sharper corners, less distortion, reduced vignetting 

New optical design:  advanced 5-element/4-group optical design incorporating ultra-high index tantalum-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 and Super35 camcorder, such as Sony E-mount, Fuji X-mount cameras Sony FS7 MARKII, 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/Prime lenses regardless of exit pupil distance.  (More information can be found in the press release here)

New professional Mount-Rod Support Kit is also available (not included), which is compatible with all Metabones adapters with tripod foot. 



Crop Factor after using Speed Booster ULTRA 0.71x by camera



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Disclaimer: we are NOT licensed, approved or endorsed by Arri and Canon.



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.


Our Smart AdapterTM  series adapters have the following additional features