Macro ports will magnify image, dome port corrects refraction & maintains angle of view of lens
The WD-3 Wide Angle Dome provides a wider angle of coverage underwater without the distorted edges or vignetting (dark shadows in the corners of the image) that are typically present when using a standard wide angle wet lens. (simply slides onto the standard port of the Ikelite housing- no modification to or replacement of the housing's original port is necessary)
Get a flash to add light and color to your picture. Sync cord and arm on some are not included.