Nauticam 的觀景窗分成單眼和微單用的，微單的版本只能和 Nauticam 自家的微單殼相容，單眼的版本，則可以和 Nauticam / Ikelite / Aquatica / Sea&Sea / Nexus 等主流單眼防水殼相容。
得根據使用的防水殼，挑選對應的接環：
33101 Viewfinder mounting ring for Nexus
33102 Viewfinder mounting ring for Aquatica housing
33103 Viewfinder mounting ring for Ikelite housing
33104 Viewfinder mounting ring for Seatool N200
33105 Viewfinder mounting ring for Seatool N300
33106 Viewfinder mounting ring for Zillion
33107 Viewfinder mounting ring for Inon
33108 Viewfinder mounting ring for Sea&Sea
* (not compatible with Sea&Sea D300)
33109 Viewfinder mounting ring for Patima Canon 550 housing
33110 Viewfinder mounting ring for Patima Nikon D90 housing