Hi, how you gona fit the kowa in the 72mm canon lens? my knowledge is that kowa is a smaller lens and you need to zooming inside the lens.
For the la7200 I just made my own support,
for the anamorphic suppot get an old 72mm skylight filter break the glass , cut away the excess
metal ring in the la7200 adapter, screw on both parts , the focus ring of the scoopic will fit and allow
to focus perfect just keep the adapter horizontaly.