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phone: (310) 633-5052

Extension Rings

Extension rings are used to fine-tune the distance between a port and an underwater housing to fit lenses of different sizes. To find the right extension rings for your lens, contact us at Bluewater Photo!

24 of 107 Items
  • Ikelite DL Port Extension 42mm

    Ikelite DL Port Extension 42mm

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: IKE-75042

    Ikelite DL Port Extension 42mm Part #: Ike-75042 This Ikelite Port Extension extends the port by 42mm and designed to be used with the new dry lock port system.   Please see Ikelite DryLock Port Chart We dive with our products all the time. Please call...

    $250.00
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  • Nauticam N120 to N100 Port Adaptor (29.3mm port adaptor)

    Nauticam N120 to N100 Port Adaptor (29.3mm port adaptor)

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NA-21329

    Nauticam N120 to N100 Port Adaptor (29.3mm port adaptor)   Product Overview: A step-down port adaptor to be able to mount N100 ports to the N120 Housings.   Please see Nauticam Port Chart    

    $325.00
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  • Sea & Sea DX Extension Ring 40L

    Sea & Sea DX Extension Ring 40L

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: SS-30145

    Sea & Sea DX Extension Ring 40L with Lock Product Overview: The Sea & Sea Extension Ring 40L with Lock extends your port system by 40mm and it features a safety lock to avoid accidental unscrewing of the port. Specifications: Depth Rating:...

    $299.95
    Add to Cart
  • Sea & Sea DX Extension Ring 30L

    Sea & Sea DX Extension Ring 30L

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: SS-30144

    Sea & Sea DX Extension Ring 30L with Lock Product Overview: The Sea & Sea Extension Ring 30L with Lock extends your port system by 30mm and it features a safety lock to avoid accidental unscrewing of the port. Specifications: Depth Rating:...

    $284.95
    Add to Cart
  • Sea & Sea DX Extension Ring 20L

    Sea & Sea DX Extension Ring 20L

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: SS-30143

    Sea & Sea DX Extension Ring 20L with Lock Product Overview: The Sea & Sea Extension Ring 20L with Lock extends your port system by 20mm and it features a safety lock to avoid accidental unscrewing of the port. Specifications: Depth Rating:...

    $279.95
    Add to Cart
  • Nauticam N120 Extension Ring 90 II Nauticam N120 Extension Ring 90 II

    Nauticam N120 Extension Ring 90 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22190

    Nauticam N120 Extension Ring 90 II     Product Overview: The Nauticam N120 Extension Ring 90 II has been designed to extend the port by 90mm (effective length)   Please see Nauticam Port Chart   We offer lifetime support with all...

    $457.00
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  • Nauticam N120 Extension Ring 80 II Nauticam N120 Extension Ring 80 II

    Nauticam N120 Extension Ring 80 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22180

    Nauticam N120 Extension Ring 80 II   Product Overview: The Nauticam N120 Extension Ring 80 II has been designed to extend the port by 80mm (effective length) and popularly used with these lenses. Nikon 14-24mm Nikon 16-35mm Canon...

    $422.00
    Add to Cart
  • Nauticam N120 70mm Extension Ring II

    Nauticam N120 70mm Extension Ring II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22170

    Nauticam N120 70mm Extension Ring II   Product Overview: The Nauticam N120 Extension Ring 70 II has been designed to extend the port by 70mm (effective length) and popularly used with these lenses. Sigma 17-70mm Nikon 12-24mm Nikon 14-24mm Nikon...

    $413.00
    Add to Cart
  • Nauticam N120 Extension Ring 60 II Nauticam N120 Extension Ring 60 II

    Nauticam N120 Extension Ring 60 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22160

    Nauticam N120 Extension Ring 60 II   The Nauticam N120 Extension Ring 60 II is made from aluminum anodized alloy and has an effective length of 60mm with a N120 port system. Please see Nauticam Port Chart   We offer lifetime support with...

    $404.00
    Add to Cart
  • Nauticam N120 Extension Ring 55 II Nauticam N120 Extension Ring 55 II

    Nauticam N120 Extension Ring 55 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22155

    Nauticam N120 Extension Ring 55 II   Product Overview: The Nauticam N120 Extension Ring 55 II has been designed to extend the port by 55mm.     Please see Nauticam Port Chart   We offer lifetime support with all purchases.Please...

    $404.00
    Add to Cart
  • Nauticam N120 Extension Ring 50 II Nauticam N120 Extension Ring 50 II Nauticam N120 Extension Ring 50 II

    Nauticam N120 Extension Ring 50 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22150

    Nauticam N120 Extension Ring 50 II   Product Overview: The Nauticam N120 Extension Ring 50 II has been designed to extend the port by 50mm   Please see Nauticam Port Chart     We offer lifetime support with all purchases.Please call...

    $395.00
    Add to Cart
  • Nauticam N120 Extension Ring 40 II Nauticam N120 Extension Ring 40 II Nauticam N120 Extension Ring 40 II

    Nauticam N120 Extension Ring 40 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22140

    Nauticam N120 Extension Ring 40 II   Product Overview: The Nauticam N120 Extension Ring 40 II has been designed to extend the port by 40mm and is popularly used with the following lenses and Nauticam 8 inch Dome Port: Sigma 8-16mm Tokina 10-17mm...

    $395.00
    Add to Cart
  • Nauticam N120 Extension Ring 35 II Nauticam N120 Extension Ring 35 II Nauticam N120 Extension Ring 35 II

    Nauticam N120 Extension Ring 35 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22135

    Nauticam N120 Extension Ring 35 II   Product Overview: Nauticam N120 Extension Ring 35 with Lock is made from aluminum alloy and is designed to extend the port by 35mm.   Please see Nauticam Port Chart   We offer lifetime support with...

    $387.00
    Add to Cart
  • Nauticam N120 Extension Ring 30 II Nauticam N120 Extension Ring 30 II Nauticam N120 Extension Ring 30 II

    Nauticam N120 Extension Ring 30 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22130

    Nauticam N120 Extension Ring 30 II   Product Overview: The Nauticam N120 Extension Ring 30 II has been designed to extend the ports by 30mm.   Please see Nauticam Port Chart   We offer lifetime support with all purchases.Please call or...

    $378.00
    Add to Cart
  • Nauticam N120 Extension Ring 25 II Nauticam N120 Extension Ring 25 II

    Nauticam N120 Extension Ring 25 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22125

    Nauticam N120 Extension Ring 25 II   Product Overview: The Nauticam N120 Extension Ring 25 II has been designed to extend the ports by 25mm   Check out Nauticam Port Chart   We offer lifetime support with all purchases.Please call or...

    $369.00
    Add to Cart
  • Nauticam N120 Extension Ring 20 II

    Nauticam N120 Extension Ring 20 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22120

    Nauticam N120 Extension Ring 20 II   Product Overview: The Nauticam N120 Extension Ring 20 II has been designed to extend the ports by 20mm and popularly used with lenses such as Tokina 10-17mm FE Lens to place the dome in the proper optical...

    $360.00
    Add to Cart
  • Nauticam N120 Extension Ring 10 II

    Nauticam N120 Extension Ring 10 II

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: NAU-22110

    Nauticam N120 Extension Ring 10 II   Product Overview: The Nauticam N120 Extension Ring 10 II has been designed to extend the ports by 10mm and popularly used with these lenses to place the dome in the proper position optically. Sigma 15mm fisheye...

    $158.00
    Add to Cart
  • Isotta 90mm Extension Ring B120

    Isotta 90mm Extension Ring B120

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: ISO-0230

    Isotta 90mm Extension Ring B120 for Isotta Housings   The Isotta 90mm Extension Ring B120 has 102mm bayonet and is designed to be used with Isotta housings. It is built from black anodized material which is durable yet lightweight. It provides an...

    $253.00
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  • Marelux Extension Ring 15 with Lock

    Marelux Extension Ring 15 with Lock

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: MX-32001

    Marelux Extension Ring 15 with Lock   Product Overview: The Marelux Extension Ring 15 with Lock extends your port system by 15mm and it features a safety lock to avoid accidents Specifications: Depth Rating: 150m Port Mount: Series 5 Body Material:...

    $216.00
    Add to Cart
  • Marelux Sea and Sea to Marelux Extension Ring 20

    Sea & Sea to Marelux Extension Ring 20

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: MX-31702

    Sea & Sea to Marelux Extension Ring 20 Canon EF 11-24mm F4 Lens Not Supported Product Overview: The Sea & Sea to Marelux Extension Ring 20 extends your port system by 20mm and allows you to use your Sea & Sea ports with your Marelux...

    $200.00
    Add to Cart
  • Marelux Nauticam to Marelux Extension Ring 20

    Nauticam to Marelux Extension Ring 20

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: MX-31701

    Nauticam to Marelux Extension Ring 20 Canon EF 11-24mm F4 Lens Not Supported Product Overview: The Nauticam to Marelux Extension Ring 20 extends your port system by 20mm and allows you to use your Nauticam ports with your Marelux housing.  ...

    $200.00
    Add to Cart
  • Marelux Extension Ring 40 with Focus Knob Sony FX3

    Marelux Extension Ring 40 with Focus Knob (Sony FX3)

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: MX-32202

    Marelux Extension Ring 40 with Focus Knob For Sony FX3  Product Overview: The Marelux Extension Ring 40 with Lock extends your port system by 40mm and it features a know to manually adjust the focus. Specifications: Depth Rating: 150m Port...

    $524.00
    Add to Cart
  • Marelux Extension Ring 40 with Focus Knob

    Marelux Extension Ring 40 with Focus Knob

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: MX-32101

    Marelux Extension Ring 40 with Focus Knob Product Overview: The Marelux Extension Ring 40 with Lock extends your port system by 40mm and it features a know to manually adjust the focus. Specifications: Depth Rating: 150m Port Mount: Series 5...

    $446.00
    Add to Cart
  • Marelux Extension Ring 100 with Lock

    Marelux Extension Ring 100 with Lock

    Free Shipping on Orders Over $200 to the US and Canada

    SKU: MX-32010

    Marelux Extension Ring 100 with Lock Product Overview: The Marelux Extension Ring 100 with Lock extends your port system by 100mm and it features a safety lock to avoid accidents Specifications: Depth Rating: 150m Port Mount: Series 5 ...

    $436.00
    Add to Cart
24 of 107 Items

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