I haven't been able to find that part in the catalogue or elsewhere( adapter for Nauticam viewfinder to Subal housing yes, but not Subal viewfinder to Nauticam housing.) Do you have the part no. and price for it please?
Blibecap, Stewart and Okuma - thanks very much for your replies.
The background to my question is that I have had a long line of Subal housings over the years and have all the necessary ports, extension rings, zoom gears that I need. I would now like to house my Canon 70D camera but Subal does not have a housing for it. So I am thinking Nauticam or Aquatica - both of these offer port adaptors for Subal so at least I will be able to use my Subal ports and extensions. Hence also looking at using an existing viewfinder and zoom rings.
I suspect the Subal GS viewfinder is not going to fit without an adaptor - seems like Blibecap has the solution. Stewart, the GS fits in 35mm opening in the housing and needs about 7mm thickness for the 2 O-rings to seat. My Subal zoom gears have an outer diameter of 90mm. If you could check those against the Aquatica counterparts I would be very grateful.
If the viewfinder doesn't work out I will contact you Blibecap about the adapter and if the zoom gears don't match I will look at Okuma's solution.