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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!

140 of 140 Items
  • 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 16-35mm ...

    $510.00
    Add to Cart
  • 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
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    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...

    $228.65
    $269.00
    Add to Cart
  • 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
    Add to Cart
  • 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
    Add to Cart
  • 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
    Add to Cart
  • 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
    Add to Cart
  • 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
    Add to Cart
  • 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
    Add to Cart
  • Nauticam N120 55mm Extension Ring Nau-21155

    Nauticam N120 55mm Extension Ring (Type 1)

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

    SKU: NAU-21155

    Nauticam N120 55mm Extension Ring (Type 1)   Product Overview: This is the Nauticam 55mm extension ring with lock for dSLR underwtaer housings & ports with N120 port mount If you have any questions about the compatibility of this extension...

    $457.00
    Add to Cart
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    Aquatica Extension Ring 39.5mm #18462

    Aquatica Extension Ring 39.5mm #18462

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

    SKU: AQ-48462

    Aquatica Extension Ring 39.5mm Part #: AQ-18462 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...

    $228.65
    $269.00
    Add to Cart
  • Ikelite Mirrorless Lens Extension - 1.2 Inch 5516.65

    Ikelite Mirrorless Lens Extension - 1.2 Inch 5516.65

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

    SKU: IKE-5516.65

    Ikelite Mirrorless Lens Extension - 1.2 Inch Part # 5516.65 Extends a Mirrorless Lens Port by 1.2 inches (30mm) for use with longer lenses.Lens compatibie with Olympus M.Zuiko 12-40mm What's Included: Lens extension Spare securing screws ...

    $200.00
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  • Ikelite DLM 2.2 Inch Port Extension Ikelite DLM 2.2 Inch Port Extension Ikelite DLM 2.2 Inch Port Extension

    Ikelite DLM 2.2 Inch Port Extension

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

    SKU: IKE-5516.70

    Ikelite DLM 2.2 Inch Port Extension   The Ikelite DLM 2.2 Inch Port Extension extends the port by 2.2 inches for longer lenses. Also compatible with Ikelite Canon SL1 Housing and Canon 100mm USM Macro Lens for autofocus use only. It is talso very...

    $219.95
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    Aquatica 52mm Extension Ring for Mirrorless Housings 30604

    Aquatica 52mm Extension Ring for Mirrorless Housings 30604

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

    SKU: AQ-30604

    Aquatica 52mm Extension Ring Part #: AQ-30604 Product Overview: For use with Aquatica mirrorless underwater housings The ring is required for lenses including: Olympus 12-50mm micro-four thirds lens   Please click here for Aquatica Port Chart...

    $195.50
    $230.00
    Add to Cart
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    Aquatica 32mm extension ring 30601

    Aquatica 32mm extension ring 30601

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

    SKU: AQ-30601

    Aquatica 32mm Extension Ring Part #: AQ-30601 Product Overview: For Panasonic 7-14mm F4 lens and Aquatica mirrorless underwater housings 32mm in length   Please click here for Aquatica Port Chart. Please call the Bluewater Photo team at...

    $195.50
    $230.00
    Add to Cart
  • Sale
    Aquatica 58mm Extension Ring for 9-18mm and 12-40mm

    Aquatica 58mm Extension Ring for 9-18mm and 12-40mm

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

    SKU: AQ-30602

    Aquatica 58mm Extension Ring for 9-18mm and 12-40mm part # AQ-30602 The 58mm Port Extension Ring for Select Olympus Micro Four Thirds Lenses from Aquatica, extends the length of the lens port, providing the extra space needed to accommodate the lens...

    $195.50
    $230.00
    Add to Cart
  • Zen Extension Ring for Olympus PEN Housings

    Zen Extension Ring for Olympus PEN Housings

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

    SKU: ZEN-ER-EP-25

    Zen Extension Ring for Olympus PEN Housings Product Overview: Use the Zen Extension Ring to extend the Zen FP-100 Flat Port for use with the Olympus 60mm Macro lens. Perfect for housings like the PT-EP03L, PT-EP06 and PT-EP12 that do not fit the...

    $199.99
    Add to Cart
  • Nauticam Extension Ring 20mm with Lock

    Nauticam Extension Ring 20mm with Lock

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

    SKU: NAU-21120

    Nauticam 20mm Extension Ring with Lock (Type I)   Product Overview: Used with lenses like the Tokina 10-17mm fisheye lens, to place the dome in the proper position optically   Please see Nauticam Port Chart    

    $413.00
    Add to Cart
  • XIT 404 XIT404 Aquatica Focus Knob

    XIT404 Aquatica Focus Knob

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

    SKU: XIT-KF0001AQ

    XIT404 Aquatica Focus Knob Part #: KF0001AQ Product Overview: An Aquatica Focus Knob gives you the perfect control you need when performing that critical focus. It also makes it easier to zoom with a wide angle lens. The Focus Knob presses onto your...

    $45.00
    Add to Cart
  • XIT 404 XIT404 Ikelite Aperature Knob

    XIT404 Ikelite Aperature Knob

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

    SKU: XIT-KAIKK

    XIT404 Ikelite Aperature Knob Part #: KAIKK Product Overview: An Ikelite Aperture Knob gives you the perfect control you need it. The Aperture Knob presses onto your existing knob, vinyl tape is included to ensure a snug fit. The focus knob is...

    $35.00
    Add to Cart
  • XIT 404 XIT404 Ikelite F-Stop knob

    XIT404 Ikelite F-Stop knob

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

    SKU: XIT-KFSIKK

    XIT404 Ikelite F-Stop knob Part# KFSIKK Product Overview: An Ikelite F-Stop Knob gives you the perfect control you need it. The F-Stop Knob presses onto your existing knob, vinyl tape is included to ensure a snug fit. The focus knob is constructed of...

    $35.00
    Add to Cart
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    Aquatica Extension Ring 63.5mm #48458

    Aquatica Extension Ring 63.5mm #48458

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

    SKU: AQ-48458

    Aquatica Extension Ring Part #48458 Product Overview: For use with Aquatica ports in order you utilize your favorite lens.  Constructed from anodized aluminum.      Please click here for Aquatica Port Chart. Please call the Bluewater Photo team at...

    $279.65
    $329.00
    Add to Cart
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    Aquatica Extension Ring 54.5mm with Lock

    Aquatica Extension Ring 54.5mm with Lock

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

    SKU: AQ-48457

    Aquatica Extension Ring 54.5mm with Lock Part #: AQ-48457 Product Overview: For use with Aquatica ports in order you utilize your favorite lens. This updated version includes a lock to prevent ports from accidentally coming unscrewed.   Please...

    $279.65
    $329.00
    Add to Cart
  • Sale
    Aquatica Extension Ring 16.5mm #48456

    Aquatica Extension Ring 16.5mm #48456

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

    SKU: AQ-48456

    Aquatica Extension Ring 16.5mm Part #: AQ-48456 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...

    $228.65
    $269.00
    Add to Cart
  • Sale
    Aquatica Extension Ring 28.5mm with Lock

    Aquatica Extension Ring 28.5mm with Lock

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

    SKU: AQ-48453

    Aquatica Extension Ring 28.5mm with Lock Part #: AQ-48453 Product Overview: For use with Aquatica ports in order you utilize your favorite lens. This updated version includes a lock to prevent ports from accidentally coming unscrewed.   Please...

    $228.65
    $269.00
    Add to Cart
  • Nauticam N85 Mini Extension Ring 30 Nau-36630

    Nauticam N85 Mini Extension Ring 30 (Nau-36630)

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

    SKU: NAU-36630

    Nauticam N85 Mini Extension Ring 30 Part #: Nau-36630 Product Overview: This extension ring allows you to use you Olympus Zuiko 60mm macro lens with your current Nauticam Macro Port 35. Compatible with N85 port system   Please see Nauticam Port Chart...

    $246.00
    Add to Cart
  • Nauticam Mini Extension Ring 20

    Nauticam Mini Extension Ring 20

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

    SKU: NAU-36620

    Nauticam Mini Extension Ring 20 Part #: Nau-36620 Product Overview: This extension ring allows you to use you Olympus Zuiko 60mm macro lens with your current Nauticam Macro Port 45.      Please see Nauticam Port Chart We dive with our products all...

    $237.00
    Add to Cart
  • Ikelite Port Body 5510.16

    Ikelite Port Body 5510.16

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

    SKU: IKE-5510.16

    Ikelite Port Body Part #: Ike-5510.16 Product Overview: The Ikelite Port Body 5510.16 is the standard zoom port body and will accomodate lenses up to 3.4 inches long (with a flat port) or 3.5 inches long (with a dome port). An appropriate Port Body...

    $225.00
  • Ikelite Port Body 5510.28

    Ikelite Port Body 5510.28

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

    SKU: IKE-5510.28

    Ikelite Port Body Part #: Ike-5510.28 Product Overview: The Ikelite Port Body 5510.28 will accomodate the Nikon 18-135mm lens, as well as lenses up to 5 inches long (with a flat port) or 5.1 inches long (with a dome port). An appropriate Port Body is...

    $275.00
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  • Nauticam N120 50mm Extension Ring

    Nauticam N120 50mm Extension Ring (Type 1)

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

    SKU: NAU-21150

    Nauticam N120 50mm Extension Ring (Type 1)   Product Overview: This is the Nauticam 50mm extension ring for the N120 port system   Please see Nauticam Port Chart We dive with our products all the time. Please call the Bluewater Photo team at...

    $448.00
    Add to Cart
  • Nauticam N120 70mm Extension Ring Nau-21170

    Nauticam N120 70mm Extension Ring (Type 1)

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

    SKU: NAU-21170

    Nauticam N120 70mm Extension Ring (Type 1)   Part #: Nau-21170 Product Overview: This is the Nauticam 70mm extension ring for the N120 port system.   Used for these lenses (among others) Sigma 17-70mm Nikon 12-24mm Nikon 14-24mm Nikon...

    $474.00
    Add to Cart
  • Nauticam N120 60mm Extension Ring Nau-21160

    Nauticam N120 60mm Extension Ring (Type 1)

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

    SKU: NAU-21160

    Nauticam N120 60mm Extension Ring (type 1)   Product Overview: This is the Nauticam 60mm extension ring for the N120 port system   Please see Nauticam Port Chart We dive with our products all the time. Please call the Bluewater Photo team...

    $466.00
    Add to Cart
  • Precision Sea and Sea to Ikelite Port Adapter

    Precision Sea & Sea to Ikelite Port Adapter

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

    SKU: PRE-SS-I-PA

    Precision Sea & Sea to Ikelite Port Adapter The Precision Sea & Sea Port Adapter allows you to mount your Ikelite style Precision dome to your Sea & Sea DSLR housing.   Have any questions?  Call us at 310-633-5052 or email us...

    $229.00
    Add to Cart
  • Precision Modular Port Body for Ikelite

    Precision Modular Port Body for Ikelite

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

    SKU: PRE-MPB-IKE

    Precision Modular Port Body for Ikelite Product Overview: The Modular Port Body which is designed to work with the Prec-5in-Nik-ike and Prec-5in-Tok-ike Precision 5" Dome as well as ikelite's modular flat port system and Focus Extension. There are no...

    $150.00
    Add to Cart
  • Ikelite Extended Zoom Port Body 5510.24

    Ikelite Extended Zoom Port Body 5510.24

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

    SKU: IKE-5510.24

     Ikelite Extended Zoom Port Body Part #: Ike-5510.24 Product Overview: This port body is used with wide-angle lenses and the Ikelite 8-inch dome port.   Please see Ikelite Port Chart We dive with our products all the time. Please call the Bluewater...

    $250.00
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  • Nauticam 30mm Extension Ring with Lock

    Nauticam 30mm Extension Ring with Lock (type I)

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

    SKU: NAU-21130

    Nauticam 30mm Extension Ring with Lock (type I)   Product Overview: Used with lenses like the Canon 8-15mm, to place the dome in the proper position optically   Please see Nauticam Port Chart We dive with our products all the time. Please call...

    $422.00
    Add to Cart
  • Nauticam N120 40mm Extension Ring with Lock

    Nauticam N120 40mm Extension Ring with Lock. (Type 1)

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

    SKU: NAU-21140

    Nauticam N120 40mm Extension Ring with Lock (type 1)   Product Overview: For use with the following lenses and the Nauticam 8 inch dome port: Sigma 8-16mm Tokina 10-17mm with 1.4x teleconverter Tokina 11-16mm Canon 10-22mm Canon 24mm F1.4L  ...

    $439.00
    Add to Cart
  • Isotta Extension Ring 40 mm -B120

    Isotta Extension Ring 40 mm -B120

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

    SKU: ISO-200

    Isotta Extension Ring 40 mm -B120   The Isotta Extension Ring ISO-200 features a 120mm bayonet and extends the port by 40mm. The extension ring is built from black anodized anticorodal aluminum which makes it durable and robust. In addition, it also...

    $193.00
    Add to Cart
  • Isotta Extension Ring 60 mm -B120

    Isotta Extension Ring 60 mm -B120

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

    SKU: ISO-218

    Isotta Extension Ring 60 mm -B120   The Isotta Extension Ring ISO-218 features a 120mm bayonet and extends the port by 60mm. The extension ring is built from black anodized anticorodal aluminum which makes it durable and robust. In addition, it also...

    $217.00
    Add to Cart
  • Nauticam N120 10mm Extension Ring Nau-21110

    Nauticam N120 10mm Extension Ring (Nau-21110)

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

    SKU: NAU-21110

    Nauticam N120 10mm Extension Ring (Type I) * This item is non-returnable, non-refundable, non-cancellable, and may be subject to extended lead times as it is manufactured on demand. We always do our best to meet trip deadlines so please advise us if you...

    $186.00
    Add to Cart
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    Ikelite USED: Ikelite Mirrorless Lens Extension - 1.2 Inch 5516.65

    USED: Ikelite Mirrorless Lens Extension - 1.2 Inch 5516.65

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

    SKU: IKE-5516.65-USED-2

    USED: Ikelite Mirrorless Lens Extension - 1.2 Inch 5516.65   SOLD Part # IKE-5516.65 Extends a Mirrorless Lens Port by 1.2 inches (30mm) for use with longer lenses.Lens compatibie with Olympus M.Zuiko 12-40mm       ...

    $140.00
    $200.00
  • Ikelite Focus Extension for Modular Port 5510.75

    Ikelite Focus Extension for Modular Port 5510.75

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

    SKU: IKE-5510.75

    Ikelite Focus Extension for Modular Port Discontinued Part # 5510.75 Product Overview: Special extension to be used with Nikon 105mm VR Macro and Canon 100mm USM Macro lenses.  Manual focus is easily adjusted with a knob on the side of the...

    $174.95
  • Ikelite Port Body 5510.22

    Ikelite Port Body 5510.22

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

    SKU: IKE-5510.22

    Ikelite Port Body 5510.22 Part #: Ike-5510.22 Product Overview: This Ikelite Port Body is used with the Ikelite 8" dome port (5510.45) for Ikelite DSLR housings. This mount is for select wide angle lenses, including the Tokina 11-16mm, Canon 10-22mm,...

    $250.00
140 of 140 Items

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