https://newatlas.com/multiturret-lens-mount/59299/

Before zoom lenses arrived on the scene, film makers used cameras featuring a few different lenses mounted to a rotating disc – meaning that they could switch from wide to close up to telephoto in the blink of an eye. Looking for a quick way to switch between different zoom ratios on large format modern cameras, award-winning cinematographer Ian Kerr, CSC, tapped into the past to create the MultiTurret.