Dome ports are a crucial part of the optical systems that we as underwater photographers deploy. Judging by questions and comments on the Wetpixel Forum, they are also somewhat misunderstood. This is in part because the underlying optical theory of dome ports is somewhat complex, and is hence avoided. Wetpixel Editor Adam Hanlon attempts to demystify this, by offering some thoughts on dome port choices on Wetpixel Live.

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