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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 Focus Gear for OM 90mm F3.5 Macro IS PRO€79.00 €65.29In stockGear to manual control the focus ring of your OM 90mm F3.5 Macro IS PRO lens under water
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AOI Zoom ring for M.ZUIKO DIGITAL ED 12-45mm F4.0 PRO€79.00 €65.29In stockNewest model (type1) Zoom gear for M.ZUIKO DIGITAL ED 12-45mm F4.0 PRO
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AOI LG-OM1-1250EZ Zoom ring for 12-50mm EZ€82.50 €68.18In stockZoom Gear- 1 for M.ZUIKO DIGITAL ED 12-50mm F3.5-6.3 EZ to control the zoom function of your lens when in use in an underwater housing.
AOI LG-OM-1250EZ
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AOI Zoom Gear for Lumix 7-14mm F4.0 ASPH€79.00 €65.29In stockAOI Zoom Gear for Lumix 7-14mm F4.0 ASPH
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AOI Focus Gear I for M.ZUIKO DIGITAL ED 8mm F1.8 Fisheye PRO€82.50 €68.18Backorder. Ready for shipment in 2 to 4 weeksRing, required to manually use the focus function of your M.ZUIKO DIGITAL ED 8mm Fisheye lens when used in selected underwater housings.
AOI LG-OM1-8PRO
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AOI Zoom Gear 1 for M.ZUIKO DIGITAL ED 7-14mm F2.8 PRO€75.00 €61.98Backorder. Ready for shipment in 2 to 4 weeksZoom Gear- 1 for M.ZUIKO DIGITAL ED 7-14mm F2.8 PRO
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AOI Zoom Gear-1 for M.ZUIKO DIGITAL ED 9-18mm F4.0-5.6€72.50 €59.92In stockAOI Zoom Gear-1 for M.ZUIKO DIGITAL ED 9-18mm F4.0-5.6
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.
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AOI LG-SEL-50-MACRO Focus Gear for Sony SEL 50mm F2.8 Macro€69.00 €57.02Backorder. Ready for shipment in 2 to 4 weeksFocus gear for the Sony SEL 50mm f2.8 Macro lens.
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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,