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Extension Rings

48 of 148 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...

    $250.00
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  • Ikelite DLM 1.2 Inch Port Extension Ikelite DLM 1.2 Inch Port Extension Ikelite DLM 1.2 Inch Port Extension Ikelite DLM 1.2 Inch Port Extension Ikelite DLM 1.2 Inch Port Extension

    Ikelite DLM 1.2 Inch Port Extension

    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...

    $199.95
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  • Inon S-MRS Magnet Ring RF14-35

    Inon S-MRS Magnet Ring RF14-35

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

    SKU: INO-4570018120664

    Inon S-MRS Magnet Ring RF14-35   A magnet ring specifically designed for "Canon RF14-35mm F4L IS USM". In combination with compatible "MRS EXT. Ring 50", it supports zoom operation of the "RF14-35mm...

    $158.00
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  • Inon S-MRS Magnet Ring C8-15 Set Inon S-MRS Magnet Ring C8-15 Set

    Inon S-MRS Magnet Ring C8-15 Set

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

    SKU: INO-4570018120510

    Inon S-MRS Magnet Ring C8-15 Set   A set of "S-MRS Magnet Ring" and "Magnet Ring Adapter C8-15". Attaching on the Canon "EF8-15mm F4L Fisheye USM" lens enables zoom operation. Only "MRS EXT. Ring 33"...

    $71.00
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  • Inon Extension Ring 36

    Inon Extension Ring 36

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

    SKU: INO-4562121435896

    Inon Extension Ring 36   An extension ring with 36mm effective length using M96 male/female threaded mounts. Required when using Canon "EF100mm f/2.8L Macro IS USM" + "Mount Adapter EF-EOS R" or...

    $111.00
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  • Inon MRS Extension Ring 111 Inon MRS Extension Ring 111 Inon MRS Extension Ring 111

    Inon MRS Extension Ring 111

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

    SKU: INO-4570018120435

    Inon MRS Extension Ring 111   MRS EXT. Ring exclusively for "RF100mm f/2.8 L MACRO IS USM". Use with "M86 Port 07" attached on the front end. The new S-MRS provides smoother operation with less play...

    $277.00
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  • Inon MRS Extension Ring 54

    Inon MRS Extension Ring 54

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

    SKU: INO-4570018120633

    Inon MRS Extension Ring 54   An Extension Ring for Canon "RF15-30mm F4.5-6.3 IS STM" employing the S-MRS system, where zooming operation is controlled by the magnetic attraction. Attaching "S-MRS...

    $198.00
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  • Inon MRS Extension Ring 50

    Inon MRS Extension Ring 50

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

    SKU: INO-4570018120626

    Inon MRS Extension Ring 50   An extension ring tailored for Canon RF14-35mm F4L IS USM to provide smoother operation with less play or rattle in combination with the S-MRS Magnet Ring RF14-35 on the...

    $459.00
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  • Inon S-MRS Magnet Ring

    Inon S-MRS Magnet Ring

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

    SKU: INO-4570018120503

    Inon S-MRS Magnet Ring   A magnet ring attached on the camera lens to control various lens rings by magnetic attraction with an S-MRS Control Ring on "MRS EXT. Ring 33" or "MRS EXT. Ring 111".The...

    $20.00
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  • Inon MRS Extension Ring 33 Inon MRS Extension Ring 33

    Inon MRS Extension Ring 33

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

    SKU: INO-4570018120428

    Inon MRS Extension Ring 33   The new S-MRS provides smoother operation with less play or rattle comparing to the previous model. By combining the EOS R6 Mark II with an RF lens, the MF Peaking...

    $158.00
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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: ...

    $236.00
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  • 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...

    $536.00
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  • 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. ...

    $446.00
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  • 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 ...

    $436.00
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  • Marelux Extension Ring 90 with Lock

    Marelux Extension Ring 90 with Lock

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

    SKU: MX-32009

    Marelux Extension Ring 90 with Lock Product Overview: The Marelux Extension Ring 90 with Lock extends your port system by 90mm and it features a safety lock to avoid accidents Specifications: ...

    $406.00
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  • Marelux Extension Ring 20 with Lock

    Marelux Extension Ring 20 with Lock

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

    SKU: MX-32002

    Marelux Extension Ring 20 with Lock Product Overview: The Marelux Extension Ring 20 with Lock extends your port system by 20mm and it features a safety lock to avoid accidents Specifications: ...

    $246.00
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  • Marelux Extension Ring 30 with Lock

    Marelux Extension Ring 30 with Lock

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

    SKU: MX-32003

    Marelux Extension Ring 30 with Lock Product Overview: The Marelux Extension Ring 30 with Lock extends your port system by 30mm and it features a safety lock to avoid accidents Specifications: ...

    $266.00
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  • Marelux Extension Ring 40 with Lock

    Marelux Extension Ring 40 with Lock

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

    SKU: MX-32004

    Marelux Extension Ring 40 with Lock Product Overview: The Marelux Extension Ring 40 with Lock extends your port system by 40mm and it features a safety lock to avoid accidents Specifications: ...

    $286.00
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  • Marelux Extension Ring 50 with Lock

    Marelux Extension Ring 50 with Lock

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

    SKU: MX-32005

    Marelux Extension Ring 50 with Lock Product Overview: The Marelux Extension Ring 50 with Lock extends your port system by 50mm and it features a safety lock to avoid accidents Specifications: ...

    $306.00
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  • Marelux Extension Ring 60 with Lock

    Marelux Extension Ring 60 with Lock

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

    SKU: MX-32006

    Marelux Extension Ring 60 with Lock   Product Overview: The Marelux Extension Ring 60 with Lock extends your port system by 60mm and it features a safety lock to avoid accidents Specifications:...

    $326.00
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  • Marelux Extension Ring 70 with Lock

    Marelux Extension Ring 70 with Lock

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

    SKU: MX-32007

    Marelux Extension Ring 70 with Lock   Product Overview: The Marelux Extension Ring 70 with Lock extends your port system by 70mm and it features a safety lock to avoid accidents Specifications:...

    $346.00
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  • Marelux Extension Ring 80 with Lock

    Marelux Extension Ring 80 with Lock

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

    SKU: MX-32008

    Marelux Extension Ring 80 with Lock   Product Overview: The Marelux Extension Ring 80 with Lock extends your port system by 80mm and it features a safety lock to avoid accidents Specifications:...

    $376.00
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  • Inon Extension Ring 81

    Inon Extension Ring 81

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

    SKU: INO-4562121435919

    Inon Extension Ring 81   An extension ring is compatible with "Canon EXTENDER EF2x". Required when using Canon "EF100mm f/2.8L Macro IS USM", Kenko x 2.0 Teleconversion Lens, and LEICA DG...

    $119.00
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  • Sale
    Nauticam USED: Nauticam N120 Extension Ring 30 ~ with Lock

    USED: Nauticam N120 Extension Ring 30 ~ with Lock

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

    SKU: USER-NAU-21130-1

    USED: Nauticam N120 Extension Ring 30 ~with Lock   This product is sold by a third party seller. While we do our best to vet the authenticity of the listing, we are not responsible for any...

    $375.00
    $422.00
  • AquaTech Aquatec X-40 Adapter

    Aquatec X-40 Adapter

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

    SKU: AQT-10825

    AquaTech X-40 Adapter Part #: AQT-10825   Product Description: The AQUATECH X-40 Adapter ring is designed for a wide range of lenses to allow for the use flat and dome ports. The X-40 Adapter is...

    $199.00
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  • Isotta Adapter for Nauticam Ports V2 Isotta Adapter for Nauticam Ports V2 Isotta Adapter for Nauticam Ports V2 Isotta Adapter for Nauticam Ports V2

    Isotta Adapter for Nauticam Ports V2

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

    SKU: ISO-3977

    Isotta to Nauticam Port Adapter Ring V2   The Isotta to Nauticam Port adapter ring allows the owner of an Isotta underwater housing to use Nauticam ports on that housing. Features: Black anodized...

    $352.94
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  • Inon S-MRS Focus Ring RF15-30

    Inon S-MRS Focus Ring RF15-30

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

    SKU: INO-4570018120671

    Inon S-MRS Focus Ring RF15-30   Tailored magnet ring for Canon "RF15-30mm F4.5-6.3 IS STM".In combination with compatible "MRS EXT. Ring 54", it enables "RF15-30mm F4.5-6.3 IS STM" focus operation...

    $158.00
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  • Inon S-MRS Zoom Ring RF15-30

    Inon S-MRS Zoom Ring RF15-30

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

    SKU: INO-4570018120688

    Inon S-MRS Zoom Ring RF15-30   Tailored magnet ring for Canon "RF15-30mm F4.5-6.3 IS STM". In combination with the compatible "MRS EXT. Ring 54", it enables zoom operation of the "RF15-30mm F4.5-6.3...

    $158.00
    Add to Cart
  • Inon S-MRS Magnet Ring S70 Set Inon S-MRS Magnet Ring S70 Set

    Inon S-MRS Magnet Ring S70 Set

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

    SKU: INO-4570018120534

    Inon S-MRS Magnet Ring S70 Set   A set of "S-MRS Magnet Ring" and "Magnet Ring Adapter S70". Attaching on the Sigma "70mm F2.8 DG MACRO" lens enables manual focus operation. Only "MRS EXT. Ring 33"...

    $71.00
    Add to Cart
  • Inon S-MRS Magnet Ring RF35 Set Inon S-MRS Magnet Ring RF35 Set

    Inon S-MRS Magnet Ring RF35 Set

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

    SKU: INO-4570018120527

    Inon S-MRS Magnet Ring RF35 Set   A set of "S-MRS Magnet Ring" and "Magnet Ring Adapter RF35". Attaching on the Canon "RF35mm F1.8 MACRO IS STM" lens enables manual focus operation. Only "MRS EXT...

    $71.00
    Add to Cart
  • Inon Extension Ring 18

    Inon Extension Ring 18

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

    SKU: INO-4562121435872

    Inon Extension Ring 18   An extension ring with effective length of 18mm using M96 male/female threaded mounts. For use with Canon "EF8-15mm F4L Fisheye USM" + "Mount Adapter EF-EOS R" in combination...

    $111.00
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    AOI Extension Ring 22mm for Olympus OMD Housings - EXT-22

    AOI Extension Ring 22mm for Olympus OMD Housings

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

    SKU: aoi-ext22

    AOI Extension Ring 22mm for Olympus OMD Housings - EXT-22   Part #: AOI-EXT-22 Product Overview: The AOI port system for the Olympus OMD underwater housings allow the photographer to expand their...

    $249.00
    $395.00
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  • Sale
    AquaTech Aquatech P-30Ex Port Extension Ring 30mm

    Aquatech P-30Ex Port Extension Ring 30mm

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

    SKU: AQT-10706

    Aquatech P-30Ex Port Extension Ring 30mm Part #: AQT-10706 Product Description: The AquaTech P-30 Ex Port extension ring is designed for a wide range of lenses to aid in the performance of...

    $165.00
    $195.00
  • Aquatica Port Extension Ring for Sony 16-35mm lens Aquatica Port Extension Ring for Sony 16-35mm lens Aquatica Port Extension Ring for Sony 16-35mm lens Aquatica Port Extension Ring for Sony 16-35mm lens

    Aquatica Port Extension Ring for Sony 16-35mm lens

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

    SKU: AQ-48477

    Aquatica Port Extension Ring for Sony 16-35mm lens   The Aquatica Port Extension Ring for Sony 16–35mm Lens is a precision-engineered accessory designed to ensure perfect optical alignment and...

    $369.00
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  • Isotta Extension Ring 30 mm

    Isotta Extension Ring 30 mm

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

    SKU: ISO-1380

    Isotta 30mm Extension Ring B102 for Isotta Housings Extension ring with 102 mm bayonet to increase the lenght of the housing's port by the mentioned measure and allow the use of different lenses.  

    $175.84
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  • Sale
    Marelux USED: Marelux Extension Ring 40 with Lock Marelux USED: Marelux Extension Ring 40 with Lock Marelux USED: Marelux Extension Ring 40 with Lock

    USED: Marelux Extension Ring 40 with Lock

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

    SKU: USER-MX-32004

    USED: Marelux Extension Ring 40 with Lock This product is sold by a third party seller. While we do our best to vet the authenticity of the listing, we are not responsible for any inaccuracies in the...

    $200.00
    $286.00
  • Marelux Nauticam N120 to Marelux Extension Ring 30

    Nauticam N120 to Marelux Extension Ring 30

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

    SKU: MX-31705

    Nauticam to Marelux Extension Ring 30   Product Overview: The Nauticam to Marelux Extension Ring 30 extends your port system by 30mm and allows you to use your Nauticam ports with your Marelux...

    $370.00
    Add to Cart
  • Marelux Nauticam N100 to Marelux Extension Ring 17

    Nauticam N100 to Marelux Extension Ring 17

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

    SKU: MX-31704

    Nauticam to Marelux Extension Ring 17   Product Overview: The Nauticam to Marelux Extension Ring 17 extends your port system by 17mm and allows you to use your Nauticam ports with your Marelux...

    $340.00
    Add to Cart
  • Nauticam N100 35II Extension Ring

    Nauticam N100 35II Extension Ring

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

    SKU: NAU-37431

    Nauticam N100 35II Extension Ring Part #: Nau-37431 Product Overview: Nauticam Extension Ring 35II is designed to be used with N100 port system and has an effective length of 35mm

    $570.00
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  • Sale
    Nauticam USED: Nauticam N85-N120 50mm Port Adaptor II

    USED: Nauticam N85-N120 50mm Port Adaptor II

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

    SKU: NAU-36206-USED-4

    USED: Nauticam N85-N120 50mm Port Adaptor II   Condition: Excellent An adapter to convert from an N85 port opening to N120 port opening to use with N85 Sony housings. Adaptor Features <

    $390.00
    $590.00
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  • Isotta Macro Port M67 H59 B120 Isotta Macro Port M67 H59 B120 Isotta Macro Port M67 H59 B120 Isotta Macro Port M67 H59 B120 Isotta Macro Port M67 H59 B120

    Isotta Macro Port M67 H59 B120

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

    SKU: ISO-4462

    Isotta Macro Port M67 H59 B120 for Isotta Housings   The Isotta Macro Port H59 is an optical glass macro lens port featuring an M67 threaded adapter for attaching additional lenses, enhancing image...

    $351.67
    Add to Cart
48 of 148 Items

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!

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