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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.
Gears
Gears are control rings that allow manual focus or zoom operation of lenses inside underwater housings. They are essential for precise handling during a dive.
Nauticam C100IS-F for Canon EF 100mm f2.8L IS USM [19523]€220.00 €181.82Backorder. Ready for shipment in 1 to 2 weeksNauticam C100IS-F Focus Gear voor Canon EF 100mm f2.8L Macro IS USM [19523] Learn More
Nauticam C1635II-Z for Canon EF 16-35mm f/2.8L II [19527]€200.00 €165.29Backorder. Ready for shipment in 1 to 2 weeksNauticam C1635II-Z zoomgear for the Canon EF 16-35mm f/2.8L II USM lens.
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Nauticam TC1017-Z for Tokina AT-X 10-17 F3.5-4.5 DX [19529]€200.00 €165.29Backorder. Ready for shipment in 1 to 2 weeksNauticam TC1017-Z for Tokina AT-X 10-17mm F3.5-4.5 Fisheye DX [19529] Learn More
Silicon gear SIL-6.448€38.00 €31.40Not available anymore !Each Hugyfot housing is equipped with a zoom- / focus system. This is an external button on the left side of the house. This is connected to a gear and silicon ring on the lens in the housing. Through this system, the user can control the zoom or focus by hand. Learn More
Ikelite zoom/focus gear 5509.17€40.25 €33.26In stockThis Ikelite sleeve / gearing and clamp set is special designed for use with the Nikon 17-35mm f / 2.8D IF-ED AF-S lens. Learn More
Ikelite zoom/focus gear 5509.18€28.75 €23.76In stockThis Ikelite sleeve / gearing and clamp set is special designed for use with the Nikon 18-105mm f/3.5-5.6G ED VR AF-S DX lens. Learn More
Ikelite zoom/focus gear set for lenses 2.8 to 3 in diameter€34.50 €28.51In stockIkelite Universal Zoom Set for Lenses between 2.8-inch (71mm) and 3.0-inch (76mm) in diameter #5509.28 Learn More
INON MRS Magnet Ring DG45 Set€180.20 €148.93Backorder. Ready for shipment in 2 to 4 weeksINON MRS Magnet Ring DG45 Set Learn More
INON MRS Magnet Ring DG45 Adapter€37.69 €31.15Backorder. Ready for shipment in 2-5 working daysINONMRS Magnet Ring DG45 Adapter Learn More
INON MRS Magnet Ring G14-45 Set€180.20 €148.93Backorder. Ready for shipment in 2-5 working daysINON MRS Magnet Ring G14-45 Set Learn More
Frequently asked questions about gears for underwater housings
What is a gear for an underwater housing?
A gear is a ring placed around a lens that allows you to control focus or zoom through the external controls of an underwater housing.
Do I need a gear for every lens?
Not always. Some lenses can be used without a gear, but for manual focus or zoom control, a compatible gear is required.
What is the difference between a focus gear and a zoom gear?
A focus gear is used to manually adjust focus, while a zoom gear allows you to change focal length on zoom lenses.
How do I know which gear I need for my underwater housing?
You can use port charts to find the correct gear for your specific lens, port and underwater housing.
Are gears brand specific?
Yes, gears are designed for specific lenses and underwater housing systems. Always check compatibility before choosing a gear.
Related articles about gears for underwater housings
- Posted: March 17, 2026Categories: Underwater HousingsRead more »
- Posted: August 26, 2024Categories: Underwater Housings
Read more »AOI underwater housings are compact, lightweight, and ergonomic. Depending on the lens you want to use with your camera, you'll need a matching AOI port, gear and AOI extension ring. AOI has created port charts where you can look up exactly which items you need to start underwater photography with your lens in the underwater housing.
- Posted: March 06, 2024Categories: Underwater Housings
Read more »Many Nauticam housings provide interchangeable ports, enabling the use of various lenses. However, different lenses may demand distinct ports and extension rings to maintain or correct for underwater optics. Certain lenses permit access to zoom and manual focus functions while inside the housing,