unfortunately it does not seem to work with bmpcc at this point. it does not show f-stop (cant control).
Seems like It cannot recognize lens at all.
Lens i tested
・Canon EF-S 24mm f/2.8 STM Lens
・Tamron SP 17-50mm f/2.8 XR Di-II VC
・Tamron SP 70-200mm f/2.8 DI VC
3lens above work well with my gh4 (except stabilization)