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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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AOI LG-SEL-1224-GM Zoom Gear for Sony FE 12-24mm F2.8 GM€69.00 €57.02In stockZoom gear to control the zoom function of your Sony FE 12-24mm F2.8 GM lens manually when in use in an (selected) AOI underwater housing.
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AOI Zoom Gear 1 for M.ZUIKO DIGITAL ED 12-100mm F4.0 PRO€82.50 €68.18In stockGear to control the zoom of your 12-200mm F4.0 IS PRO lens manually when it's in use in a selected AOI underwater housing.
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AOI Zoom Gear- 1 for ZUIKO DIGITAL ED 8-25mm F2.8 PRO€79.00 €65.29In stockGear to manually control the zoom function of your Zuiko 8-25 f2.8 PRO lens when you use it in an AOI underwater housing.
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AOI Focus Gear for Tamron 90mm F2.8 Di III VXD Macro€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksGear to control the focus of your Tamron 90mm f2.8 Di III MACRO VXD lens manually when it's in use in an AOI underwater housing
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AOI Zoom Gear for Sony FE 16-35mm f/2.8 GM€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksGear to manually control the zoom function of the Sony SEL FE 16-35mm f/2.8 GM lens when it's in use in an AOI underwater housing.
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AOI Zoom Gear for Sony FE 16-35mm f/2.8 GM 2€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksGear to manually control the zoom function of the Sony SEL FE 16-35mm f/2.8 GM II lens when it's in use in an AOI underwater housing.
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AOI LG-SEL-2470-GM2 Zoom Gear for Sony SEL 24-70mm F2.8II€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksAOI LG-SEL-2470-GM2 Zoom Gear for Sony SEL 24-70mm F2.8II
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AOI LG-SEL-2470-SM Zoom Gear voor Sigma DG-DN 24-70€69.00 €57.02In stockAOI LG-SEL-2470-SM Zoom Gear for Sigma DG-DN 24-70
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AOI Zoom Gear for Sony FE 24-70mm F2.8 GM 2€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksAOI Zoom Gear for Sony FE 24-70mm F2.8 GM 2
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AOI Zoom Gear for Canon EF8-15mm f/4L Fisheye USM€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksAOI Zoom Gear for Canon EF8-15mm f/4L Fisheye USM+Metabones EF-E BT5
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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,