Nauticam NA-A7c housing

Has anyone found a way to get an external Inon viewfinder to work with the Nauticam A7c housing? Or is Nauticam the only option at this point?

The Nauticam NA-A7C housing uses a Nauticam MIL size viewfinder not the one made for larger housings like NA-A1 and NA A7R III/IV. It appears that Inon viewfinders do support some of the large Nauticam housings but not the smaller MIL housings.  

46 minutes ago, Phil Rudin said:

The Nauticam NA-A7C housing uses a Nauticam MIL size viewfinder not the one made for larger housings like NA-A1 and NA A7R III/IV. It appears that Inon viewfinders do support some of the large Nauticam housings but not the smaller MIL housings.  

Thanks Phil. Keep us posted. An aside, the Seafrogs flash trigger for fiber optic cables ($29.95) triggers my Inon Z240s just fine on slow sync. And they fit in the housing. I taped a white card to bounce the flash up towards the fiber optic ports 

Hello
I am a user of the nauticam housing.
The lens uses a Sigma AF 15mm F2.8 EX DG Fisheye lens with an MC-11 adapter.

Various tests were conducted to use the system charts that the Nauticam does not have, and I am currently using the SEA&SEA NX Dome for weight optimization.