At the time the video was made, those were the two lenses available for the Studio Camera 6K Pro with the EF mount. Since then, three more lenses have been added for the EF mount. What you mentioned refers to a B4 mount, which is more suited for the URSA Broadcast, and there are many options available in the B4 mount category. However, with EF servo lenses, the options remain more limited
Are you sure these are the ONLY 2 lenses that work with BMD focus + zoom demands? What about the CJ45ex13.6b lens?
At the time the video was made, those were the two lenses available for the Studio Camera 6K Pro with the EF mount. Since then, three more lenses have been added for the EF mount. What you mentioned refers to a B4 mount, which is more suited for the URSA Broadcast, and there are many options available in the B4 mount category. However, with EF servo lenses, the options remain more limited