Holy s***! First let's just say my BMPCC Speed Boosters were, erm, disassembled and rattling around in a box. Had completely abandoned them - since I stopped using the Pocket Cinema Camera - then, Metabones updated the firmware to kill the BMPCC 0.58x on the GH4 (the only camera it fits). They did this for a very good reason - it could damage the shutter, goes very deep. My EF version does not fit the GH5S at all. You can screw the glass out away from the sensor and it will mount but then n