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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 N815-Z Zoom Gear for Nikon AF-S Fisheye 8-15mm [19150]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/1/9/19150.jpg)
Nauticam N815-Z Zoom Gear for Nikon AF-S Fisheye 8-15mm€220.00 €181.82Backorder. Ready for shipment in 1 to 2 weeks![Nauticam SFE1224-F Focus Gear for Sony SEL1224G FE 12-24mm [37154]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/3/7/37154.jpg)
Nauticam SFE1224-F Focus Gear for Sony SEL1224G FE 12-24mm€220.00 €181.82Backorder. Ready for shipment in 1 to 2 weeks
Nauticam SFE1224-Z Zoom Gear for Sony SEL1224G FE 12-24mm F4€200.00 €165.29Backorder. Ready for shipment in 1 to 2 weeks
![Nauticam PL818-Z Zoom Gear for Panasonic Leica 8-18mm [36062]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/3/6/36062.jpg)
Nauticam PL818-Z Zoom Gear for Panasonic Leica 8-18mm€280.00 €231.40Backorder. Ready for shipment in 1 to 2 weeks![Nauticam P1442II-Z Panasonic 14-42mm F3.5-5.6 II [36057]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/3/6/36057.jpg)
Nauticam P1442II-Z Panasonic 14-42mm F3.5-5.6 II [36057]€160.00 €132.23Backorder. Ready for shipment in 1 to 2 weeks
Gates Zoom Gear - see Gates Lens Matrix€127.00 €104.96Backorder. Ready for shipment in 1 to 2 weeks![Ikelite zoom gear Sigma 10-20 f/4.5-5.6 [5509.33]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/5/5/5509.33-zoom-gear-sigma-10-20-a_1024x1024.jpg)
![Nauticam Iris and Focus Gear Set for Leica Summicron-C [16434]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set_1.jpg)
Nauticam Iris and Focus Gear Set for Leica Summicron-C€806.10 €666.20Special order product, non-cancelable, non-returnable !![Nauticam Iris and Focus Gear Set for Leica Thalia [16433]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set.jpg)
Nauticam Iris and Focus Gear Set for Leica Thalia [16433]€806.10 €666.20Special order product, non-cancelable, non-returnable !
Nauticam Iris and Focus Gear Set for Zeiss Compact Prime CP3€714.10 €590.17Special order product, non-cancelable, non-returnable !![Nauticam Iris and Focus Gear Set for Zeiss Compact Prime CP2 [16437]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set_3.jpg)
Nauticam Iris and Focus Gear Set for Zeiss Compact Prime CP2€714.10 €590.17Special order product, non-cancelable, non-returnable !![Nauticam Iris and Focus Gear Set for Tokina Cinema Vista(FE) [16436]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set_4.jpg)
Nauticam Iris and Focus Gear Set for Tokina Cinema Vista(FE)€714.10 €590.17Special order product, non-cancelable, non-returnable !![Nauticam Iris and Focus Gear Set for Sigma Cine Prime (EF) [16435]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set_5.jpg)
Nauticam Iris and Focus Gear Set for Sigma Cine Prime (EF)€714.10 €590.17Special order product, non-cancelable, non-returnable !![Nauticam Iris and Focus Gear Set for Canon CN-E Prime (EF) [16432]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set_6.jpg)
Nauticam Iris and Focus Gear Set for Canon CN-E Prime (EF)€709.10 €586.03Special order product, non-cancelable, non-returnable !![Nauticam Iris and Focus Gear Set for ARRI Ultra Prime[16431]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/i/r/iris_and_focus_gear_set_7.jpg)
Nauticam Iris and Focus Gear Set for ARRI Ultra Prime[16431]€709.10 €586.03Special order product, non-cancelable, non-returnable !
Nauticam C1124-Z Zoom Gear for Canon EF 11-24mm f/4L USM€208.30 €172.15Backorder. Ready for shipment in 1 to 2 weeks
Nauticam Cinema System Gear Set for Canon EF-S 18-55mm STM€510.00 €421.49Replaced by a newer model. See link below...
Nauticam GF120-F Focus Gear for FUJINON GF120mmF4 R Macro€540.00 €446.28Special order product, non-cancelable, non-returnable !
Nauticam GF3264-Z Zoom Gear for FUJINON GF32-64mmF4 R LM WR€540.00 €446.28Special order product, non-cancelable, non-returnable !![Nauticam N85 to N120 34.7mm Port Adaptor with Knob [36064]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/n/a/na36064-1.jpg)
Nauticam N85 to N120 34.7mm Port Adaptor with Knob [36064]€466.50 €385.54Backorder. Ready for shipment in 1 to 2 weeks
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,