Metabones Canon EF Lens to Micro Four Thirds Camera T CINE Speed Booster XL 0.64x (Fifth Generation) Hosa Technology CYX-402F The clamp has 1x 3/8"-16

The clamp has 1x 3/8"-16 male thread

Plug product from AMPHENOL CONNEX with the model number 242175Product details

BLACK product from BUD INDUSTRIES with the model number CU-3286-MBProduct details

and very quiet autofocusing for both photos and videos

Metabones Canon EF Lens to Micro Four Thirds Camera T CINE Speed Booster XL 0.64x (Fifth Generation) Hosa Technology CYX-402F The clamp has 1x 3/8"-16Canon EF Lens to MFT Camera Positive Lock Canon EF Lens Mount Increases Maximum Aperture by 1 1 3 Stop Increases Angle of View by 0. 64x Autofocus, IS, and Exif Data Support Smooth Iris with Select Adapted Lenses Control Aperture from Camera Body Cinema EOS Support; Micro USB Port Weather Resistant Rubber Mount Gasket Detachable Arca Type Compatible Foot Boost the performance of your full frame Canon EF mount lenses when mounted to your Micro Four