This is the same as our Dome Port for lenses less than 3 in, with a special shade designed to eliminate vignetting with the Nikon 20mm D lens. This port and shade combination will work in place of Dome Port 5503 with no modification or sacrifice in image quality.
The special shade is available for purchase separately for use with an existing port.
The MSRP referenced is a suggested US market retail price. Actual sales prices are set exclusively by Authorized Ikelite Dealers.