Metabones Adaptateur optique EF vers RF avec Speed Booster 0,71x pour EOS-C70
Metabones
Canon EF Lens to RF-mount T Speed Booster ULTRA 0.71x for EOS C70
ref: MB_SPEF-EFR-BT1
Speed Booster ULTRA for RF Mount cameras suggested to use with EOS C70
Sharper corners, less distortion, reduced vignetting
Metabones EF-RF Speed Booster ULTRA 0.71x - to adapt Canon EF mount full-frame lenses to the new Canon RF mount. Filmmakers are now able to mitigate most of the 4k video crop factor of EOS R (1.75x) and EOS RP (1.63x) and reduce it to 1.24x and 1.15x respectively. The field of view is now much closer to still photo mode. This new Speed Booster is not intended for still photography but will work if the camera is configured to APS-C mode.
Speed Booster ULTRA uses an advanced 5-element/4-group optical design by Caldwell Photographic Inc., incorporating ultra-high index tantalum-based optical glass to achieve extraordinary optical performance with improved corner sharpness, distortion and reduced vignetting. Speed Booster ULTRA has a magnification of 0.71x, effectively reducing the crop factor of 4k video on EOS R and EOS RP from 1.75x to 1.24x. The Speed Booster 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 lenses regardless of exit pupil distance. Thus, 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 to produce 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.
Compatibility List:
Canon RF camera: EOS R and EOS RP
Canon EF-mount Lens
Canon EF-Extender (Teleconverter)
Carl Zeiss EF-mount Lens (see note 1)
Sigma EF-mount Lens (see note 1)
Tamron EF-mount Lens (see note 1)
Tokina EF-mount Lens (see note 1)
Contax N mount lenses modified to Canon EF by Conurus
Contax 645 NAM-1 adapter modified to Canon EF by Conurus
Note 1: EF-S lenses and third-party lenses designed for APS-C format DO NOT WORK AT ALL when used in conjunction with Speed Booster® due to the limitation of image coverage.
Adapter
Camera Mount: Canon RF
Lens Mount: Canon EF
Magnification : 0.71x
Optical Design: 5 Elements in 4 Groups
Physical
Tripod Mounting Thread : 1/4"-20 Female
Dimensions : 2.8 x H: 0.8" / diameter: 70.0 x H: 20.0 mm
Weight: 7.87 oz / 223 g
Monture Optique | Canon EF |
Monture Boitier | Canon RF |
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