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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.
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Sea&Sea Focus Gear Canon EF 14mm [31149]Special Price €139.00 €114.88 Regular Price €199.00In stock
Sea&Sea Zoom Gear Sigma AF 18-50mm F2.8 EX DC [31151]Special Price €139.00 €114.88 Regular Price €199.00In stock
![Sea&Sea Focus Gear for Sigma 105mm (42150] – Image 1](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss56161_7.jpg)
Sea&Sea Focusgear Nikkor 16mm [56410]€109.00 €90.08Backorder. Ready for shipment in 2-5 working days![Sea&Sea Zoom Gear Nikkor 35-80 & 28-80 F3.5-5.6 [5613]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss5613.jpg)
Sea&Sea Zoom Gear Nikkor 35-80 & 28-80 F3.5-5.6 [5613]Special Price €99.00 €81.82 Regular Price €149.00In stock![Sea&Sea Focus Gear AF SIGMA 105 mm [46360]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss46360.jpg)
Sea&Sea Focus Gear AF/MF 60mm NX [51300]Special Price €129.00 €106.61 Regular Price €179.00In stock
Sea&Sea Zoom Gear Nikkor 35-80 & 28-80 F3.5-5.6 [5613]Special Price €99.00 €81.82 Regular Price €149.00In stock![Sea&Sea Focusgear Canon EF 100mm F2.8L Macro [31155]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31155.jpg)
Sea&Sea Focusgear Canon EF 100mm F2.8L Macro [31155]€259.00 €214.05Backorder. Ready for shipment in 2-5 working days
Sea&Sea CX500 EF 50 f2.8 macro gear [4522]Special Price €50.00 €41.32 Regular Price €199.00In stock![Sea&Sea Zoom Gear for 28-80mm USM III LENS [46200]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss46200.jpg)
Sea&Sea zoomgear Canon 18-55 IS STM (31158)Special Price €139.00 €114.88 Regular Price €199.00Backorder. Ready for shipment in 2-5 working days![Sea&Sea zoom gear for SEL1635Z [31177]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31177.jpg)
Sea&Sea zoom gear for SEL1635Z [31177]€295.00 €243.80Backorder. Ready for shipment in 2-5 working days
Sea&Sea zoom gear for NIKON AF-S FISHEYE 8-15MM [31191]€295.00 €243.80Backorder. Ready for shipment in 2-5 working days![Sea&Sea focus gear for CANON EF16-35MM F2.8L III USM [31190]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31190.jpg)
Sea&Sea focus gear for CANON EF16-35MM F2.8L III USM [31190]€295.00 €243.80Backorder. Ready for shipment in 2-5 working days![Sea&Sea zoom gear for CANON EF16-35MM F2.8L III USM [31189]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31189.jpg)
Sea&Sea zoom gear for CANON EF16-35MM F2.8L III USM [31189]€295.00 €243.80Backorder. Ready for shipment in 2-5 working days![Sea&Sea Zoom Gear NIKKOR Z 14-30mm f/4 S [31202]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31202.jpg)
Sea&Sea Zoom Gear NIKKOR Z 14-30mm f/4 S [31202]€165.00 €136.36Backorder. Ready for shipment in 2-5 working days![Sea&Sea zoom gear for RF14-35MM F4L IS USM [31210]](https://www.uwcamerastore.com/media/catalog/product/cache/585a9f53153ae04cde57614e2eac8117/s/s/ss31210.jpg)
Sea&Sea zoom gear for RF14-35MM F4L IS USM [31210]€215.00 €177.69Backorder. 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,