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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!

  • Fantasea FNX Converter 55G

    Fantasea FNX Converter 55G

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

    SKU: FA-2131

    Fantasea FML Port Extension 25 :Part #" FA-2121 Product Overview: Fantasea FNX Converter 55G allows installing FNX or other third party lens ports and port accessories to your Fantasea FML system. Construction: Hard anodized Aluminum alloy  ...

    $499.95
  • Aquatica Step Up Extension Ring for Mirrorless Lenses

    Aquatica Step Up Extension Ring for Mirrorless Lenses

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

    SKU: AQ-30616

    Aquatica Step Up Extension Ring for Mirrorless Lenses Part #: AQ-30616 Product Overiew: Aquatica Extension Ring designed to be used with the various mirrorless lenses such as Olympus 7-14mm Pro Lens, Panasonic 8-18mm Lens and Sony 12mm E-Mount Lens ...

    $195.00
  • Zen Underwater Port Body for Ikelite DSLR Housings

    Zen Underwater Port Body for Ikelite DSLR Housings

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

    SKU: ZEN-IKPB.24

    Zen Underwater Port Body for Ikelite DSLR Housings Product Overview: Zen Port Body for Ikelite DSLR Housings is made from anodized aluminum material which also provides a large inside diameter to cater for wide-body lenses.  It allows you to use...

    $230.00
  • Nauticam N120 Extension Ring 25 with Lock

    Nauticam N120 Extension Ring 25 with Lock

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

    SKU: NAU-21125

    Nauticam N120 Extension Ring 25 with Lock DISCONTINUED This Extension Ring has been replaced by Nauticam N120 Extension Ring 25 II Product Overview: Nauticam N120 Extension Ring 25 with Lock is made from aluminum alloy and is designed to be used with...

    $413.00
  • Nauticam N120 Extension Ring 35 with Lock

    Nauticam N120 Extension Ring 35 with Lock (Type 1)

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

    SKU: NAU-21135

    Nauticam N120 Extension Ring 35 with Lock (Type I)   Product Overview: Nauticam N120 Extension Ring 35 with Lock is made from aluminum alloy and is designed to be used with DSLR housings.   Please see Nauticam Port Chart We dive with our...

    $439.00
  • Fantasea FML Port Extension 25

    Fantasea FML Port Extension 25

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

    SKU: FA-2121

    Fantasea FML Port Extension 25 :Part #" FA-2121 Product Overview: Fantasea FML Port Extension 25 extends the port by 25mm.   Construction: Hard anodized Aluminum alloy Depth rated to 60 meters / 200 feet Effective length: 25mm ...

    $249.95
  • Ikelite DL Port Extension 50mm

    Ikelite DL Port Extension 50mm

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

    SKU: IKE-75050

    Ikelite DL Port Extension 50mm Part #: Ike-75050 This Ikelite Port Extension extends the port by 50mm 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...

    $275.00
  • Ikelite DL Port Extension 28mm

    Ikelite DL Port Extension 28mm

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

    SKU: IKE-75028

    Ikelite DL Port Extension 28mm Part #: Ike-75028 This Ikelite Port Extension extends the port by 28mm 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...

    $225.00
  • Ikelite DL Port Extension 20mm

    Ikelite DL Port Extension 20mm

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

    SKU: IKE-75020

    Ikelite DL Port Extension 20mm Part #: Ike-75020 Product Overview: This Ikelite Port Extension extends the port by 20mm and designed to be used with the new dry lock port system.   Please see Ikelite DryLock Port Chart We dive with our products all...

    $225.00
  • Sea and Sea ML-NX Conversion Ring 30

    Sea & Sea ML-NX Conversion Ring 30

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

    SKU: SS-30126

    Sea & Sea ML-NX Conversion Ring 30 Part #: SS-30126 Product Overview: Sea & Sea's ML-NX Conversion Ring, when used, allows for the use of NX ports and extension rings on mirrorless housings. Dimensions (DIAxD) 133 x 41.2mm / 5.2 x 1.6...

    $419.95
  • Aquatica Extension Ring 96.5 mm #48466

    Aquatica Extension Ring 96.5 mm #48466

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

    SKU: AQ-48466

    Aquatica Extension Ring 96.5 mm Part #: AQ-48466 Product Overview: For use with Aquatica ports in order you utilize your favorite lens.     Please click here for Aquatica Port Chart. Please call the Bluewater Photo team at 310-633-5052 with any...

    $429.00
  • Aquatica Extension Ring 97.5 mm #48454

    Aquatica Extension Ring 97.5 mm #48454

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

    SKU: AQ-48454

    Aquatica Extension Ring 97.5 mm Part #: AQ-48454 Product Overview: For use with Aquatica ports in order you utilize your favorite lens.     Please click here for Aquatica Port Chart. Please call the Bluewater Photo team at 310-633-5052 with any...

    $369.00
  • Aquatica Extension Ring 74.5 mm #48459

    Aquatica Extension Ring 74.5 mm #48459

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

    SKU: AQ-48459

    Aquatica Extension Ring 74.5 mm Part #: AQ-48459 Product Overview: For use with Aquatica ports in order you utilize your favorite lens.     Please click here for Aquatica Port Chart. Please call the Bluewater Photo team at 310-633-5052 with any...

    $329.00
  • AOI Extension Ring 22mm for Olympus OMD Housings - EXT-22

    AOI Extension Ring 22mm for Olympus OMD Housings - EXT-22

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

    SKU: AOI-EXT-22

    AOI Extension Ring 22mm for Olympus OMD Housings - EXT-22 Currently Unavailable We recommend the Zen Port Adapter for Olympus OM-D housing as a great alternative! Part #: AOI-EXT-22 Product Overview: The AOI port system for the Olympus OMD...

    $165.00
  • AOI Extension Ring 24mm for Olympus PEN Housings - EXT-24

    AOI Extension Ring 24mm for Olympus PEN Housings - EXT-24

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

    SKU: AOI-EXT-24

    AOI Extension Ring 24mm for Olympus PEN Housings - EXT-24 Currently Unavailable For Olympus 8mm f1.4 Pro Lens  Part #: AOI-EXT-24 Product Overview: The AOI port system for the Olympus PEN underwater housings allow the photographer to expand their...

    $165.00
  •  Nauticam N120 80mm Extension Ring (Type 1)

    Nauticam N120 80mm Extension Ring (Type 1)

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

    SKU: NAU-21180

    Nauticam N120 Extension Ring 80 (Type 1)   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...

    $510.00
  • Zen Adapter for Sea and Sea Ports on Nauticam Mirrorless Housings

    Zen Adapter for Sea & Sea Ports on Nauticam Mirrorless Housings

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

    SKU: ZEN-PA-N85-SS-60

    Zen Adapter for Sea & Sea Ports on Nauticam's Mirrorless Housings This adapter lets you use Sea & Sea ports with Nauticam's series of mirrorless housings, as well as adding 60mm to the length of the port. If you have any questions about this...

    $199.00
  • Aquatica Extension Ring 21.5mm

    Aquatica Extension Ring 21.5mm

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

    SKU: AQ-48463

    Aquatica Extension Ring 21.5mm part# AQ-18463 Product Overiew: This extension ring is compatible with Aquatica DSLR underwater housing line.   Please click here for Aquatica Port Chart. Please call the Bluewater Photo team at 310-633-5052 with any...

    $269.00
  • Ikelite 1.25 Inch Port Extension 5510.54

    Ikelite 1.25 Inch Port Extension 5510.54

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

    SKU: IKE-5510.54

    Ikelite Port Extension  Part # Ike-5510.54 Product Overview: This Ikelite Port Extension extends the dome port by 1.25 inches, to accomodate larger size zoom lenses in the underwater housing.   Please see Ikelite Port Chart We dive with our products...

    $225.00
  • Sea and Sea Extension Ring 46 with Focus Knob

    Sea & Sea Extension Ring 46 with Focus Knob

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

    SKU: SS-30117

    Sea & Sea Extension Ring 46 with Focus Knob :Part #" SS-30117 Product Overview: Extension ring 46 with focus knob allows you to manual focus with Sea&Sea MDX housings when also using the correct focus gear on your lens. This new extension...

    $579.95
  • Sea and Sea Locking Extension Ring 40L

    Sea & Sea Locking Extension Ring 40L

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

    SKU: SS-30125

    Sea & Sea Locking Extension Ring 40L Product Overview: Sea & Sea's new Locking Extension Rings provide additional security to your underwater camera rig. Dimensions (DIAxD) 129 x 55.5mm / 5.1 x 2.2 inches Weight Approx. 234g / 8.3 oz ...

    $299.95
  • Sea and Sea Locking Extension Ring 30L

    Sea & Sea Locking Extension Ring 30L

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

    SKU: SS-30124

    Sea & Sea Locking Extension Ring 30L Product Overview: Sea & Sea's new Locking Extension Rings provide additional security to your underwater camera rig. Dimensions (DIAxD) 129 x 45.5mm / 5.1 x 1.8 inches Weight Approx. 194g / 6.8 oz ...

    $284.95
  • Sea and Sea Locking Extension Ring 20L

    Sea & Sea Locking Extension Ring 20L

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

    SKU: SS-30123

    Sea & Sea Locking Extension Ring 20L Product Overview: Sea & Sea's new Locking Extension Rings provide additional security to your underwater camera rig. Dimensions (DIAxD) 129 x 35.5mm / 5.1 x 1.4 inches Weight Approx. 154g / 5.4...

    $279.95
  • Nauticam N85 Mini Extension Ring 17

    Nauticam N85 Mini Extension Ring 17

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

    SKU: NAU-36617

    Nauticam N85 Mini Extension Ring 17 Part #: Nau-36617 Product Overview: Mini Extension ring for Nauticam Mirrorless Housings.    Please see Nauticam Port Chart We dive with our products all the time. Please call the Bluewater Photo team at...

    $237.00

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