Back in 1994, Kodak had a focal length reducer just like the SpeedBooster that made Metabones famous.
Back in the 1990s, digital photography was still just gaining a foothold and engineers were trying to figure out a number of problems and issues. It was done in a similar way to how the Metabones SpeedBooster gave cameras the ability to use lenses for larger format sensors while providing more light and field of view. Except for Kodak, it was to solve a significantly bigger problem around significantly smaller sensors. Before most cameras used CMOS sensors, they used CCD sensors–and really small ones at that. The sensors in those cameras would be laughable today for the professional photographer, and one of the big problems that needed to be solved was using available lenses.