Black Magic 2.5 and Metabones Speed Booster 0.58x

Hi guys can Pocket Cinema Camera OG -Metabones Speed Booster 0.58x Canon EF Lens to BMPCC OG work with black magic cinema camera 2.5k any issues you see here ? I was looking also at new BMC 2.5 speedboster specifically made for BM 2.5k  but they care 800 compare to pocket one

The BMPCC 0.58x booster is mechanically compatible with the MFT mount BMCC 2.5K and you can technically use them together. That said, Metabones themselves say that the 0.58x booster won't cover the whole BMCC sensor, which is bigger than Super16.

HOWEVER...

I've heard an unsubstantiated rumour that you can get full coverage with the 0.58x booster on the BMCC 2.5K but only if you use full frame lenses. If you use an APS-C lens—like the Sigma 18-35mm f1.8 for example—you'll get vignetting/port-holling. I've never had the opportunity to test this out so I have no idea if it is true, but it seems plausible enough. Good luck!