Lens Based Cross Reference Chart

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Port Selection Information
PD-50:
This is a low profile dome port designed for the Nikon Fisheye Lenses and primarily used above water.
PD-65:
This is a dome port designed for the Fisheye lens and primarily used above water.
PD-135:
This is a dome port primarily designed for the Nikon 14-24mm f2.8 & 16-35mm f4.
PD-85:
This is a large dome port with an element machined from a 9" Diameter dome. This is primarily used for
underwater and over/under shots. The port has an outer diameter of 8" and an overall height of 4".
Flat Element Ports:
All other ports are equipped with flat elements. For best results the lens element should be as close as
possible to the port element. These ports are used mainly for above water shooting. All Flat Elements have
SAR coating.
P-30Ex and P-70Ex:
These are extension rings that increase the length of the port by 30mm or 70mm. The ring screws onto the
housing and the port screws into the ring.
Current as of 17/11/15