If you already own a SeaFrogs 6-inch or 8-inch dome port, there’s no need to buy a new one when switching lenses. Simply replace the extension ring to get the correct fit.
Extension rings adjust the distance between your lens and the dome, helping maintain proper optical performance for each lens. Since different lenses sit at different lengths inside the housing, changing the extension ring ensures the best results.
This modular system lets you use one dome port with multiple lenses, saving money, reducing gear bulk, and keeping your setup simple.
Just check the recommended extension ring for your lens—and you’re ready to dive