Choosing the right port system for your underwater housing is essential for achieving sharp, distortion-free images underwater. Whether you shoot wide-angle or macro, your port setup directly affects image quality, field of view, and usability.
Ports
Choose the right underwater port for your underwater housing and macro or wide-angle lens setup. From flat ports to underwater dome ports, we offer solutions for all major waterproof housings and lenses. Check the port charts to find the right port, gear and extension ring for your lens and waterproof case.
ZEN DP-100-SS Fisheye-Macro 100mm Dome Port for Sea & Sea€1,428.00 €1,180.17Backorder. Ready for shipment in 1 to 2 weeksZEN optical glass DP-100-SS Fisheye-Macro 100mm Dome Port for Sea & Sea Learn More
Nauticam 4.33 inch Acrylic mini dome port [18803]€570.00 €471.07Backorder. Ready for shipment in 1 to 2 weeksNauticam 4.33 inch Acrylic dome port [18803]: very compact, high quality dome port for Nauticam SLR housings. Great for close-focus wide angle shots. Learn More
INON Dome Port Olympus for ZUIKO DIGITAL ED 8mm€590.40 €487.93Backorder. Ready for shipment in 1 to 2 weeksINON Dome Port Olympus for ZUIKO DIGITAL ED 8mm Learn More
INON Pancake Port€203.59 €168.26Backorder. Ready for shipment in 2 to 4 weeksInon pancake port for the Panasonic Lumix G 20mm/F1.7 lens. (Compatible with the INON X-2 housing for the Panasonic GF1) Learn More
INON MRS Base Port (without MRS Control Ring)€274.90 €227.19Backorder. Ready for shipment in 2-5 working daysINON MRS Base Port Learn More
INON MRS Base Port (without MRS Control Ring)€224.00 €185.12Backorder. Ready for shipment in 1 to 2 weeksINON MRS Base Port (without MRS Control Ring) Learn More
INON Front Port Macro€224.00 €185.12Backorder. Ready for shipment in 2 to 4 weeksINON Front Port Macro Learn More
INON Front Port Wide€285.10 €235.62Backorder. Ready for shipment in 2 to 4 weeksINON Front Port Wide Learn More
INON MRS100 Port Type S (with MRS Control Ring)€631.20 €521.65Backorder. Ready for shipment in 2-5 working daysINON MRS100 Port Type S (with MRS Control Ring) Learn More
INON MRS100 Port Type UII (without MRS Control Ring)€366.50 €302.89Backorder. Ready for shipment in 2 to 4 weeksINON MRS100 Port Type UII Learn More
Frequently asked questions about underwater ports
What is the difference between a dome port and a flat port?
A dome port is a curved (spherical) port used for wide-angle lenses. It helps maintain the field of view underwater while reducing distortion. A flat port is used for macro photography and increases magnification for close-up subjects.
Do I always need an extension ring for my underwater port?
Not always. An extension ring is only needed when your lens must be positioned correctly inside the port. This depends on your lens and underwater housing setup, and can be checked in the port charts.
What is a WACP conversion port?
A WACP (Wet Optics Conversion Port) is an advanced underwater port that combines high-quality optics with a dedicated port design. It delivers superior image quality, minimal distortion and excellent sharpness underwater.
Can I use a wet lens instead of a dome port?
Yes, in some setups you can use a wet lens on selected flat ports instead of a dome port. This allows you to switch between macro and wide-angle underwater, depending on your setup and compatibility.
How do I know which port fits my lens and housing?
You can use the port charts to find the correct combination of port, extension ring and gears for your specific lens and underwater housing.



