This Ikelite 8" Dome Port with Shade is for wide angle lenses when used in Ikelite digital SLR housings. A port body (not included) is required to attach the port to the housing. The 8" dome port reduces edge distortion on photos taken with certain fisheye and super wide-angle lenses. With this port kit over / under photos are now possible.
The Ikelite 8" dome shade is included. The shade helps prevent lens flair when shooting towards the surface. The port cover that goes over the dome with the shade attached is included.