Amazon.com : B4 to Z7 Camera Adapter,B4 2/3" Broadcast Lens to for Nikon Z Mount Z6 Z7 Full Frame Camera : Electronics
MTF MTB413B
Canon B4 Mount Lens Adapter for C700 with PL Mount 1788C002 B&H
Rent a MTF B4 Lens to Sony E-Mount Camera Adapter Kit at LensProToGo.com
DigitalGlue MC-1 B4 to RF Lens Mount – Now RED Approved for V-RAPTOR and KOMODO | CineD
B4 to Arri PL Mount
Sony FZ to B4 2/3" Lens Adapter for F5 and F55 Sensor Camera LAFZB2
Amazon.com : Fotodiox Pro Lens Mount Adapter, B4 (2/3") Lens to Sony NEX (E- Mount) Camera Body, for NEX-3, NEX-3N, NEX-5, NEX-5R, NEX-6 NEX-7 : Electronics
Amazon.com : B4 to NEX Adapter Compatible with for Canon Fujinon 2/3" Lens to &for Sony E Mount NEX Camera A6400 A7III A7RIII Alpha a9 Alpha 7R Alpha 7 A6300 A7SII A7II
Shooting with B4 mount Video lenses on large sensor cameras.