Subal Port Extension Ring EXR 90/4 - Underwater Camera Housing Accessory for Macro Photography | Perfect for Scuba Diving & Marine Exploration

The 90mm extension ring allows you to increase the effective length by 90mm in a Subal V4 port hole configuration.

The extension rings between the housing and the porthole are essential elements to ensure an optimal setup of your camera lenses. These rings allow you to adapt the distance between the lens and the porthole, ensuring optimal performance and sharp images.