[Compatible Lens]
Canon EF-S 35mm Macro IS STM



Port mounted on housing and the lens's close focusing distance.

Sample Images

Specifications
[Dimensions (DIAxD)] 132x48mm / 5.2x1.9inches
[Weight] Approx. 308g / 10.9 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (anodized, anti-reflection coating on the inner surface) + Tempered glass
[Distance] Between the port mount and inner glass surface : 14.5mm

[Compatible Lens]
Canon EF100mm F2.8L Macro IS USM
Canon RF100mm F2.8L Macro IS USM
Nikon AF-S VR Micro Nikkor ED105mm F2.8G (IF)
Nikon AF-S DX Micro Nikkor 85mm F3.5G ED VR



Specifications
[Dimensions (DIAxD)] 128x120.5mm / 5.0x4.7inches
[Weight] Approx. 505g / 17.8 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (anodized, anti-reflection coating on the inner surface) + Tempered glass
[Distance] Between the port mount and inner glass surface : 87mm / 3.4 inches

Specifications
[Dimensions (DIAxD)] 129 x 45.5mm / 5.1 x 1.8 inches
[Weight] Approx. 194g / 6.8 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)
[Distance] Between the mount and the front end: 30mm / 1.2 inches (with port lock)

Specifications
[Dimensions (DIAxD)] 129 x 55.5mm / 5.1 x 2.2 inches
[Weight] Approx. 234g / 8.3 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)
[Distance] Between the mount and the front end: 40mm / 1.6 inches (with port lock)

By designing a dedicated mold, Sea&Sea has been able to incorporate a meniscus lens design in the UDP dome construction, which reduces the spherical aberration and beam waste.
Therefore, the refractive power changes gradually from the center of the port to the peripheral area, allowing the different radii of curvature to create a clearer focus at the peripheral areas compared to that of conventional ports.

By using the highest optical grade PMMA material, the UDP 210 ARII has a refractive index close to glass allowing high degree of light transmission. In addition, Sea&Sea has achieved a 7-layer Anti Reflective (AR) coating to reduce internal reflection and the effects of decreased contrast.

Comparison of lens reflection 1
Comparison of lens reflection 2

The port has also been designed with usability in mind, as the dome can be replaced quickly and easily on the spot in any environment. In addition, the dome is also supplied with an additional bayonet mount, that can be simply attached with the six existing screws to provide compatibility with all 3rd party Nauticam housings.

*Compatible with all lenses listed on the port system chart when the port combination follows the UDP 210 AR.

Specifications
Size: Maximum diameter 250 mm x depth 104 mm. Dome Diameter 210mm
Weight: 1,310g (2.88 lbs)
Depth Rating: 100 M (328 ft)
Body Material: Corrosion-resistant aluminum alloy (anodized, internal anti-reflection coating)
Hood: ABS resin
Dome Material: Special optical PMMA

By designing a dedicated mold, Sea&Sea has been able to incorporate a meniscus lens design in the dome construction, which reduces the spherical aberration and beam.
Therefore, the refractive power changes gradually from the center of the port to the peripheral area, allowing the different radii of curvature to create a clearer focus at the peripheral areas compared to that of conventional ports. The new UDP 210 will no replace the discontinued Fisheye dome 240 #30116
By using the highest optical grade PMMA material, the UDP 210 has a refractive index close to glass allowing high degree of light transmission.

The port has also been designed with usability in mind, as the dome can be replaced quickly and easily on the spot in any environment. In addition, the dome is also supplied with an additional bayonet mount, that can be simply attached with the six existing screws to provide compatibility with all 3rd party Nauticam housings.

*Compatible with all lenses listed on the port system chart, when the port combination conforms to the Fisheye Dome 240.

Specifications
Size: Maximum diameter 250 mm x depth 104 mm. Dome Diameter 210mm
Weight: 1,310g (2.88 lbs)
Depth Rating: 100 M (328 ft)
Body Material: Corrosion-resistant aluminum alloy (anodized, internal anti-reflection coating)
Hood: ABS resin
Dome Material: Special optical PMMA

System Sample

165mm in diameter. Versatile optical dome port, compatible with various fisheye and wide-angle lenses. Peripheral image quality will better when used with an Internal Correction Lens.


【Features】
・Uses high quality BK7 crystal glass.
・Two different anti-reflective coatings are employed to optimize image quality, one for the exterior and the other for the interior of the Optical Domes. A multi-layer coating is used on the dome exteriors and the interior of the domes are coated with silicon-dioxide to effectively suppress flare and ghosting. As a result, the refractive index of each port is reduced to less than 0.01% and the domes produce extremely high-contrast images.

Difference in image quality between the Fisheye Dome Port 240 and the Optical Dome Port ll 165 under backlit conditions.
Equipment used: Canon 5D Mark lll and EF 16-35mm F2.8L ll. Depth: 5m


Specifications
[Dimensions (DIAxD)] 185 x 70 mm / 7.3 x 2.8 inches
[Weight] Approx. 938g / 33.1oz
[Depth rating] 100m / 330ft
[Construction] corrosion-resistant aluminum alloy (anodized),BK7 crystal glass,(dome) and POM resin (shade)
[Accessories] Instruction Manual,Port Cover,Port Case

Specifications
[Dimensions (DIAxD)] 174x79.5mm / 7x3.2inch
[Weight] Approx. 410g / 14.4oz
[Depth rating] 60m / 200ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating, antireflection coating)
- Dome: Acrylic
- Shade: ABS resin

System Sample(100M)

Sample Photos (taken by Takuya Nakamura)

100mm in diameter. The most compact and lightweight optical dome port SEA&SEA offers.
Designed exclusively for fisheye lenses.


Optical Dome Port ll 100 S (#30133) (made-to-order item)
Designed exclusively for Nikon AF DX Fisheye Nikkor ED 10.5mm F2.8G

Optical Dome Port ll 100 M (#30134)
Designed exclusively for Tokina AT-X 107 DX Fisheye 10-17mm F3.5-4.5, for Nikon and Canon cameras.

Optical Dome Port ll 100 L (#30135)
Designed exclusively for Canon EF 8-15mm F4L USM* and Nikon AF-S Fisheye Nikkor 8-15mm F3.5-4.5 E ED *When using with a camera equipped with an APS - C sensor such as MDX - 80D, vignetting may occur in the four corners when using at the wide end (10 mm) and the shooting distance is short. In that case, use the tele (10.5 mm) or longer focal length.


【Features】
・Uses high quality BK7 crystal glass.
・Two different anti-reflective coatings are employed to optimize image quality, one for the exterior and the other for the interior of the Optical Domes. A multi-layer coating is used on the dome exteriors and the interior of the domes are coated with silicon-dioxide to effectively suppress flare and ghosting. As a result, the refractive index of each port is reduced to less than 0.01% and the domes produce extremely high-contrast images.

Difference in image quality between the Fisheye Dome Port 240 and the Optical Dome Port ll 165 under backlit conditions.
Equipment used: Canon 5D Mark lll and EF 16-35mm F2.8L ll. Depth: 5m


Specifications
[Dimensions (DIAxD)] 130 x 64.5(S) / 81(M) / 91(L) mm / 5.1 x 2.5(S) / 3.2(M) / 3.6(L) inches
[Weight] Approx. 372g / 13.1oz(S) 423g / 14.9oz(M) 450g / 15.9oz(L)
[Depth rating] 100m / 330ft
[Construction] POM resin ,BK7 crystal glass,(dome) and corrosion-resistant aluminum alloy(shade)
[Accessories] Instruction Manual,Port Cover,Port Case

Dome produced from Planext ®　
PLANEXTⓇ is amorphous bioplastic which helps realize carbon neutrality.
In cooperation with TEIJIN LIMITED*, SEA&SEA has succeeded in producing dome ports made from PLANEXT® which provides properties ideally suited for underwater photography.
*PLANEXT Ⓡ is a Teijin Limited registered trade name.

Optical Performance
Compared with conventional acrylic material or optical glass, PLANEXⓇ produces superior or better optical performance.
(See chart)
With high-precision injection molding methods, SEA&SEA has succeeded in producing a dome that has the same curvature as a concave meniscus lens*. The 210 AR dome’s optical distortion is as small as that of optical glass lenses. When used with an internal correction lens, the best image quality required for high-end cameras can be obtained. The dome is treated with a multi AR coating to prevent internal reflection from occurring (see comparison below).

* Lens having convex curvature on one side and concave curvature on the other side.

Comparison of lens reflection 1
Comparison of lens reflection 2

Strength Performance
Because of PLANEXT’s exceptional cohesive strength (Charpy impact strength) and due to a newly designed base, the dome ports’ depth rating is now 100m/330ft.

Compatibility
Compatible with all the wide-angle conversion lenses on the system charts posted on SEA&SEA’s website.
The UDP 120 AR is designed with a housing bayonet mount that is easily replaceable. An additional bayonet compatible with a current popular housing manufacturer is also included for user versatility.

Dome Replacement
The UDP 210 AR has been designed with usability in mind. The dome can be quickly and easily replaced by the user in any environment, therefore even if due to an unfortunate incident domes can be replaced on the spot.

Specifications
[Dimensions (DIAxD)] 250x104mm/10.0x4.2inches
[Weight] Approx. 1,310g/46.2oz
[Depth rating] 100m/328ft
[Construction] Corrosion-resistant aluminum alloy (with anodization and anti-reflective coating)
-Dome: Special optical resin
-Shades: ABS resin

The set consists of: Fisheye Dome Port 240 for EF 11-24mm F4L USM, Conversion Ring 25 for EF 11-24mm F4L USM, NX Dome Port Cover, Zoom Gear for EF 11- 24mm F4L USM and Rear Port Cover (L). 

Specifications
Fisheye Dome Port 240 for EF 11-24mm F4L USM
Spare O-ring(#62134)
[Dimensions (DIAxD)] 250 x 104 mm / 9.8 x 4.1 inches
[Weight] Approx. 1,225g / 43.2oz
[Depth rating] 80m / 260ft
[Construction] corrosion-resistant aluminum alloy (anodized), acrylic (dome) and ABS (shade)

Conversion Ring 25 for EF 11-24mm F4L USM
Spare O-ring (#62101)
[Dimensions (DIAxD)] 133 x 40.5mm / 5.2 x 1.6 inches
[Weight] Approx. 215g / 7.6 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)
[Distance] Between the mount and the front end: 25mm / 1 inches (with port lock)

Notice
* Extension Ring 40L is also required in order to use the port and zoom gear set.
* The port and lens set is only compatible with housings equipped with a lens release button on the front case. When a lens is mounted on a camera in a housing without a lens lease button, the lens cannot be removed.
* Auto focus only (manual focus not possible).

This AR multi-coated glass dome port is ideal for wide-angle photography with a digital SLR camera. It comes with a port case and a dome port cover.

- Greatly reduces peripheral aberration (distortion) so images are clear from corner to corner.
- Efficient light transmission sharpens images.
- Made of glass so it sheds water droplets, excellent for clear over/under shots (half above water, half below).

Specifications
[Dimensions (DIAxD)] 181x78mm / 7.2x3.1inch
[Weight] Approx. 950g / 33.2oz
[Depth rating] 60m / 200ft
[Construction] Corrosion-resistant aluminum alloy
(anodized, anti-reflection coating on the inner surface)
- Dome: Optical glass BK7 (AR multi-coated)
- Shade: ABS resin
*Consult a SEA&SEA authorized service for more compatibility information.

Acrylic dome port for mirrorless interchangeable camera housings.

Specifications
[Dimensions (DIAxD)] 154 x 72 mm / 6.1 x 2.8 inches
[Weight] Approx. 280g / 9.9oz
[Depth rating] 80m / 260ft
[Construction] corrosion-resistant aluminum alloy (anodized), acrylic (dome) and ABS (shade)

This high quality dome port is very versatile and suitable for various wide-angle full frame lenses.
* Image aberration is rarely apparent.

Specifications
[Dimensions (DIAxD)] 250x104mm/10.0x4.2inches
[Weight] Approx. 1,270g/44.5oz
[Depth rating] 80m/262ft
[Construction] Corrosion-resistant aluminum alloy (with anodization and anti-reflective coating)
-Dome: Acrylic
-Shades: ABS resin

Specifications
[Dimensions (DIAxD)] 242x104mm / 9.7x4.2inch
[Weight] Approx. 1,000g / 35oz
[Depth rating] 60m / 200ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating, antireflection coating)
- Dome: Acrylic
- Shade: ABS resin

Specifications
[Dimensions (DIAxD)] 102.5x68mm / 4.1x2.7inch
[Weight] Approx. 259g / 9.1oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating) + Tempered glass
[Distance] Between the mount and the inner glass surface: 38.5mm / 1.5 inches

Specifications
[Dimensions (DIAxD)] 102x15mm / 4.1x0.6inch
[Weight] Approx. 90g / 3.2oz [Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (anodized)
[Distance] Between the mount and the front end: 11.2mm / 0.4 inch

Specifications
[Dimensions (DIAxD)] 132x55mm / 5.3x2.2inch
[Weight] Approx. 300g / 10.5oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (anodized)
[Distance] Between the mount and the front end: 31.2mm / 1.2 inches

NX Zoom Port.

NX Custom Flat Port. 
NX Standard Flat Port.

RDX-series housings.

Mirrorless interchangeable lens camera housings.

ML Dome Port.

With this product, the left housing grip can be positioned forward to provide easy access to the focus knob on the Extension Ring 46 with Focus Knob with Focus Gear. 

Specifications
[Dimensions (WxHxD)] 10 x 25 x 54mm / 0.4 x 1.0 x 2.1 inches
[Weight(including accessories)] Approx. 55g / 1.9oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)

*System sample

Compact Wide Port L. 
RDX Standard Port.

Compact Macro Ports.

Extension Ring 46 with Focus Knob, provides manual focus for compatible zoom lenses. (Extension ring equipped with port lock).

Compatible Housings: MDX series housings.
Compatible Lenses: Canon EF 16-35mm F2.8L ll USM, Canon EF17-40mm F4L USM, AF-S Nikkor 18-35mm F/3.5-4.5G ED, AF-S Nikkor 16-35mm F/4G ED VR(as of June2014).
* Compatible FC focus gear required for manual focusing (can be used in conjunction with a compatible zoom gear).

* Until now, auto focus has been the only option available when using a zoom gear. With the new Extension Ring 46 with Focus Knob, you can now manually focus a compatible zoom lens. When your camera's AF frames do not cover your subject, you can manually focus a compatible lens without changing composition.
* This product is the ideal solution when you shoot fast-moving subjects (which even the latest auto focus may not follow) or when you shoot in dark environments and when there are lots of particles suspended in the water; all situations where auto focus will not function correctly.
* The focus knob is located in an ideal position and angle to be easily operated with the index finger and thumb.

【Option】
Left Grip Extension
With this product, the left housing grip can be positioned forward to provide easy access to the focus knob on the Extension Ring 46 with Focus Gear.

Specifications
[Dimensions (DIAxD)] 132x61.4mm / 5.2x2.4inch (excluding protruding parts)
[Weight] Approx. 525g / 18.5oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)
[Distance] Between the mount and the front end: 46mm / 1.8 inches

Specifications
[Dimensions (DIAxD)] 129 x 35.5mm / 5.1 x 1.4 inches
[Weight] Approx. 154g / 5.4 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating)
[Distance] Between the mount and the front end: 20mm / 0.8 inches (with port lock)

[Compatible Lens]
Canon RF85mm F2 MACRO IS STM
Sony FE 50mm F2.8 Macro
Nikon AF-S Micro NIKKOR 60mm F2.8G ED


Specifications
[Dimensions (DIAxD)] 128x93.5mm / 5x3.7inches
[Weight] Approx. 435g / 15.3 oz
[Depth rating] 100m / 330ft
[Construction] Corrosion-resistant aluminum alloy (anodized, anti-reflection coating on the inner surface) + Tempered glass
[Distance] Between the port mount and inner glass surface : 60mm

System Sample

230mm in diameter. Versatile optical dome port, compatible with various fisheye and wide-angle lenses. Boasts the best image quality, including peripheral image quality. Suitable for half-underwater-half-topside images. Peripheral image quality will be even better when used with an Internal Correction Lens.


【Features】
・Uses high quality BK7 crystal glass.
・Two different anti-reflective coatings are employed to optimize image quality, one for the exterior and the other for the interior of the Optical Domes. A multi-layer coating is used on the dome exteriors and the interior of the domes are coated with silicon-dioxide to effectively suppress flare and ghosting. As a result, the refractive index of each port is reduced to less than 0.01% and the domes produce extremely high-contrast images.

Difference in image quality between the Fisheye Dome Port 240 and the Optical Dome Port ll 165 under backlit conditions.
Equipment used: Canon 5D Mark lll and EF 16-35mm F2.8L ll. Depth: 5m


Specifications
[Dimensions (DIAxD)] 250 x 120 mm / 9.8 x 4.7 inches
[Weight] Approx. 2100g / 74.1oz
[Depth rating] 100m / 330ft
[Construction] corrosion-resistant aluminum alloy (anodized),BK7 crystal glass,(dome) and POM resin (shade)
[Accessories] Instruction Manual,Optical Dome Port Cover,Port Case