Metabones T CINE Speed Booster ULTRA 0.71x for PL-Mount Lens to BMPCC 4K Camera

This will not work, as the glass will interfere with the rear of the lens.

The Metabones T CINE Speed Booster ULTRA 0.71x for PL-Mount Lens to BMPCC 4K Camera works with PL lens models with a PL flange depth that does not protrude more than 14.5mm. Unfortunately, NISI Athena primes have a 25.1mm PL flange depth and would not be supported. Currently only Zeiss CP.2, and CP.3 lenses are on the Metabones tested and approved list.

As this is a Speed-booster adapter it is designed to work with full-frame PL-mount lens. It will not work properly with Super 16mm lenses.

Here is a list of all the cameras and lenses that this adapter has been tested with. Camera Compatibility Blackmagic Pocket Cinema Camera 4K Blackmagic Pocket Cinema Camera HD (original version) Blackmagic Micro Cinema Camera Blackmagic Micro Studio Camera 4K Blackmagic Studio Camera 4K Blackmagic Studio Camera Lens Compatibility ZEISS Compact Prime lenses: CP.2 15mm / T2.9 CP.2 21mm / T2.9 CP.2 25mm / T2.1 CP.2 25mm / T2.9 CP.2 28mm / T2.1 CP.2 35mm / T1.5 CP.2 35mm / T2.1 CP.2 50mm / T1.5 CP.2 50mm / T2.1 CP.2 50mm / T2.1 CP.2 85mm / T1.5 CP.2 85mm / T2.1 CP.2 100mm / T2.1 CP.2 135mm / T2.1 CP.3 15mm / T2.9 CP.3 18mm / T2.9 CP.3 21mm / T2.9 CP.3 25mm / T2.1 CP.3 28mm / T2.1 CP.3 35mm / T2.1 CP.3 50mm / T2.1 CP.3 85mm / T2.1 CP.3 100mm / T2.1 CF9 CP.3 135mm / T2.1 ZEISS Cinema Zoom lenses: CZ.2 15 to 30mm / T2.9 CZ.2 28 to 80mm / T2.9 CZ.2 70 to 200mm / T2.9

the adapter will not work on the cooke. the rear elements of the cooke protrudes and will hit the glass in the speed-booster

It doesn't actually. I have them both in front of me right now (having bought the mount based on the answer to this question from BH Staff) and it does not. The rear glass piece of the lenses reaches out too far and doesn't permit mounting.

It doesn't acctually work with these lenses, Ihave the mount and have tried it with the lens.

The Metabones T CINE Speed Booster ULTRA 0.71x for PL-Mount Lens to BMPCC 4K Camera is compatible with the Lumix GH6, although you may need to remove the tripod foot for full compatibility.