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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!

96 of 140 Items
  • Nauticam N85 to N120 Port Adapter 60mm for Sony E-Mount

    Nauticam N85 to N120 Port Adapter 60mm for Sony E-Mount

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

    SKU: NAU-36204

    Nauticam N85 to N120 60mm Port Adapter For Sony E-Mount Part #: Nau-36204 Product Overview: Nauticam N85 to N120 Port Adapter has been designed to convert from an N85 port opening to N120 port opening to use with N85 Sony housings with Metabones EF...

    $518.00
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  • Nauticam N100 Extension Ring 30

    Nauticam N100 Extension Ring 30

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

    SKU: NAU-37401

    Nauticam N100 Extension Ring 30 Part #: Nau-37401 Product Overview: Nauticam Extension Ring 30 is designed to be used with N100 port system and has an effective length of 30mm Please see Nauticam Port Chart We dive with our products all the time...

    $351.00
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  • Nauticam N100 Extension Ring 40

    Nauticam N100 Extension Ring 40

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

    SKU: NAU-37402

    Nauticam N100 Extension Ring 40 Part #: Nau-37402 Product Overview: Nauticam Extension Ring 40 is designed to be used with N100 port system and has an effective length of 40mm Please see Nauticam Port Chart We dive with our products all the time...

    $351.00
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  • Nauticam N100 Extension Ring 50

    Nauticam N100 Extension Ring 50

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

    SKU: NAU-37403

    Nauticam N100 Extension Ring 50 Part #: Nau-37403 Product Overview: Nauticam Extension Ring 50 is designed to be used with N100 port system and has an effective length of 50mm Please see Nauticam Port Chart We dive with our products all the time...

    $388.00
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  • Nauticam N85 to N120 55mm Port Adapter with Lens Control Knob

    Nauticam N85 to N120 55mm Port Adapter with Lens Control Knob

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

    SKU: NAU-36401

    Nauticam N85 to N120 55mm Port Adapter with Lens Control Knob Part #: Nau-36401 Product Overview: The Nauticam port adapter converts your N85 port opening to accomodate N120 ports.  It also has an integrated lens control knob Please see Nauticam...

    $685.00
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  • Nauticam N200 Extension Ring 30

    Nauticam N200 Extension Ring 30

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

    SKU: NAU-16402

    Nauticam N200 Extension Ring 30 Part #: NAU-16402 Product Overview: Nauticam N200 Extension Ring 30 is designed to provide a 30mm effective length to an N200 Port setup.    Please see Nauticam Port Chart We dive with our products all the time. Please...

    $949.00
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  • Nauticam N200 Extension Ring 40

    Nauticam N200 Extension Ring 40

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

    SKU: NAU-16403

    Nauticam N200 Extension Ring 40 Part #: NAU-16403 Product Overview: Nauticam N200 Extension Ring 40 is designed to provide a 40mm effective length to an N200 Port setup.    Please see Nauticam Port Chart We dive with our products all the time. Please...

    $1,089.00
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  • Nauticam N200 Extension Ring 50

    Nauticam N200 Extension Ring 50

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

    SKU: NAU-16404

    Nauticam N200 Extension Ring 50 Part #: NAU-16404 Product Overview: Nauticam N200 Extension Ring 50 is designed to provide a 50mm effective length to an N200 Port setup.    Please see Nauticam Port Chart We dive with our products all the time. Please...

    $1,221.00
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  • Olympus PER-E01 Port Extension Ring

    Olympus PER-E01 Port Extension Ring

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

    SKU: OLY-PER-E01

    Olympus PER-E01 Port Extension Ring for Olympus OM-D Housing   Product Overview: The Olympus PER-E01 Port Extension Ring is designed to be used with Olympus EC-14 1.4x teleconverter for underwater use and is compatible with Olympus OM-D underwater...

    $179.99
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    Olympus PAD-EP08 Port Extension Adapter for Olympus OM-D Housing

    Olympus PAD-EP08 Port Extension Adapter for Olympus OM-D Housing

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

    SKU: OLY-PAD-EP08

    Olympus PAD-EP08 Port Adapter for Olympus OM-D Housing   Product Overview: The Olympus PAD-EP08 Port Adapter attaches to Port Extension Ring PER-E01 for Lens Port PPO-E01, PPO-E04 or PPO-E03 when any of these ports is attached to the Olympus OM-D...

    $149.95
    $149.99
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
    Add to Cart
  • 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
    Add to Cart
  • 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
    Add to Cart
  • 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
96 of 140 Items

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