Speedbooster for BMPC6K
https://lucadapters.webnode.it/news/magicbooster-pocket-6k/
It sits completely within the mount and has an factor of 0.71x, so you can use FF EF lenses.
From usual suspects:
https://***URL not allowed***/lucadapters-magicbooster-full-frame-speedbooster-for-the-bmpcc-6k/
https://***URL removed***/news/7844619364/speedbooster-launched-for-6k-blackmagic-pocket-cinema-camera-to-emulate-full-frame-sensor
