Ikelite DL 8 inch Dome Port with Extended Base Olympus These can be used to

These can be used to help attach lights to the adapter or mount the adapter onto a stand that does not have a 5/8" stud

Scanning Speed ( ADF ) 80 ppm/ 160 ipm (Grayscale/ B&W mode

square steel tubing with a photographic black

Light is absorbed very quickly as it passes through water

Ikelite DL 8 inch Dome Port with Extended Base Olympus These can be used toIkelite DL 8 inch Dome Port with Extended Base IK75342 Ikelite Product Number 75342 Product Details An 8 diameter dome made of optical grade acrylic. Comparable quality to glass yet significantly lighter and easier to handle, especially at the surface of the water. Not compatible with external filters. This port features a longer base which is required with certain very large diameter zoom lenses. Refer to the DL System Port Chart for compatibility.