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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.
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ZEN ER.EP.25 extension Ring for Olympus PEN Housings€285.00 €235.54Backorder. Ready for shipment in 2 to 4 weeksZen Underwater 25mm extension ring for Olympus PT-EP housings and ports Learn More
Frequently asked questions about extension rings
What is an extension ring for an underwater housing?
An extension ring is used to position your lens correctly inside the port. It sits between the underwater housing and the port.
Do I always need an extension ring for an underwater housing?
No, not always. Whether you need an extension ring depends on your lens and port combination. This can be checked in the port charts.
How do I know which extension ring I need for my underwater housing?
You can use port charts to find the correct extension ring for your specific lens and underwater housing.
Are extension rings brand specific?
Yes, extension rings are designed for specific brands and port systems. Always make sure the extension ring matches your housing and port system.
Can I use the wrong extension ring on my underwater housing?
Using the wrong extension ring can lead to poor image quality, such as softness or distortion. Always follow the recommended setup.
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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.
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Read more »Ikelite has evaluated most popular lenses, provided they are well suited for use underwater. Their recommendations for lens ports can be found in the lens port charts. First, you need to know which mount your underwater housing has.