One of the most important things is the size of the lenses, keeping the volume low.
Like the Cressi big eyes or the Cressi Matrix, the lenses are high alowing you to see down without turning down your head.
I've been diving with the clear Cressi Matrix for some years now. Switched to a black Omersub sporadically and the tube effect, like looking the landscape through a tube was disturbing. It was the sum of the black skirt + the short lenses.
Like the Cressi big eyes or the Cressi Matrix, the lenses are high alowing you to see down without turning down your head.
I've been diving with the clear Cressi Matrix for some years now. Switched to a black Omersub sporadically and the tube effect, like looking the landscape through a tube was disturbing. It was the sum of the black skirt + the short lenses.