This item is controlled on the U.S. Commerce Control List set forth in the Export Administration Regulations or the U.S. Munitions List set forth in the International Traffic in Arms Regulations, and may require a license or other authorization from the U.S. Government to be exported from the United States. Without limitation, parties purchasing from B&H are solely responsible for determining applicable export licensing requirements and for obtaining any licenses or other authorizations from the appropriate agencies of the U.S. Government that are necessary for exporting the item, such as the U.S. Department of Commerce or the U.S. Department of State.
The 18456 Port Extension Ring from Aquatica is for their bayonet style housings when using one of a variety of Canon, Nikon, Sigma and Tokina lenses in an Aquatica port. Insert the ring between the port and the housing. It is constructed from durable anodized aluminum.
To check lens and lens port compatibility, see the following charts:
Canon, Sigma and Tokina Type 1 Lens Chart
Canon, Sigma and Tokina Type 2 Lens Chart
Canon Type 4 Lens Chart
Nikon, Sigma and Tokina Type 1 Lens Chart
Nikon, Sigma and Tokina Type 2 Lens Chart
Nikon, Sigma and Tokina Type 3 Lens Chart
Nikon, Sigma and Tokina Type 4 Lens Chart