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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 SC1770OS-Z for Sigma 17-70mm F2.8-4DC Macro OS HSM€190.00 €157.02In stockNauticam SC1770OS-Z for Sigma 17-70mm F2.8-4DC Macro OS HSM [19534] Learn More![Fantasea C55G Tokina ATXAF107DXC Lens Gear [2251]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/f/a/fa2251.jpg)
Fantasea C55G Tokina ATXAF107DXC Lens Gear [2251]€86.00 €71.07In stockEnables using the zoom ring of the Tokina 10-17 mm f/3.5-4.5 AT-X 107 AF DX Fisheye Lens for Canon (ATXAF107DXC).
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The focus ring of this lens cannot be accessed using this gear.
Ikelite zoom/focus gear 5515.04€46.00 €38.02In stockA special zoom sleeve designed for use with the Olympus M.ZUIKO 14-42mm EZ lens and the Ikelite Mirrorless Dome Port wit zoom Learn More![Sea&Sea Focus Gear Sigma Macro 105mm F2.8 EX DG [31128]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31128.jpg)
Sea&Sea Focus Gear Sigma Macro 105mm F2.8 EX DG [31128]Special Price €169.00 €139.67 Regular Price €175.00In stockSea&Sea Focus Gear Sigma Macro 105mm F2.8 EX DG [31128] Learn More
Subal Zoomgear 4ZC050€195.00 €161.16Special order product, non-cancelable, non-returnable !Subal Zoomgear 4ZC050 Learn More
Nauticam P45-F Leica DG Macro Elmarit 45mm focus gear[36145]€170.00 €140.50Backorder. Ready for shipment in 1 to 2 weeksNauticam P45-F focus gear [36145] Learn More
Ikelite zoom/focus gear 5515.02€28.75 €23.76In stockA special Ikelite zoom sleeve designed for use with the Olympus M.Zuiko 12-50 mm f/3.5-6.3 ED EZ lens and the Ikelite Mirrorless Dome Port with Zoom.
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Ikelite zoom/focus gear 5515.03€46.00 €38.02In stockA special zoom sleeve designed for use with selected lenses.
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Ikelite zoom/focus gear 5515.20€46.00 €38.02Backorder. Ready for shipment in 1 to 2 weeksA special Ikelite zoom sleeve designed for use with the Panasonic 7-14 mm Lumix G Vario f/4.0 lens and the Ikelite Mirrorless Dome Port with Zoom.
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Ikelite zoom/focus gear 5515.21€46.00 €38.02Backorder. Ready for shipment in 1 to 2 weeksA special Ikelite zoom sleeve designed for use with the Panasonic Lumix G Vario 14-42mm F3.5-5.6 II ASPH Mega OIS lens and the Ikelite Mirrorless Dome Port with Zoom. 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,