This 3.5" wide-angle dome-port is part of the N85 port system and features an acrylic element and anodized aluminum construction. Different size ports are available to support a wide variety of lenses and housing types. Port extensions or adapters may be necessary for some ports and housings.
This port is designed to support the following lenses:
NIKKOR 10mm f/2.8 lens for the Nikon 1 System
Canon EF-M 22mm f/2 STM for the Canon EOS-M System