The Nauticam 18804 dome port is comprised of the same dome as the 18803 4.33" port; however the design of this port, #18804, elminates the need for an extension ring when seeking optimum performance with the Tokina 10-17mm lens.
The 4.33" diameter dome works well with fisheye lenses, and is a very nice size and light weight, for travel.
This dome port is not compatible with super wide rectil..
This is an 8 inch dome with acrylic optic for fisheye lenses.
Dimension: outside diameter 220mm 197mm (H) ( 8.6 inch diameter, 7.7 inch high)
Depth rating: 100m
Weight: appro. 950G
Construction: Hard anodised aluminum alloy body
Includes the lens shade and a neoprene port cover.
Learn more about selecting Nauticam ports, extensions, focus and zoom gears ..
Nauticam Acrylic Dome Port 6-inch (SLR) Can be used with these popular lenses(may require port extender):