Lens Ports | SEA&SEA

Housings Ports

Universal Dome Port 210 / AR

Product No.30201
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.
 
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
Housings Ports

Optical Dome Port II 100 (x3 Versions)

Product No.30133 / 30134 / 30135
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.
 
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
 
Housings Ports

Optical Dome Port II 165

Product No.30136
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
 
Housings Ports

Optical Dome Port II 230

Product No.30137
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
 
Housings Ports

NX Compact Dome Port

Product No.56601
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
Housings Ports

Fisheye Dome Port 240

Product No.30116
This high quality dome port is very versatile and suitable for various wide-angle full frame lenses.
* Image aberration is rarely apparent.

*Enlarged image
*System sample
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
Housings Ports

CX Compact Dome Port

Product No.46100
Specifications
[Dimensions (DIAxD)] 174x87mm / 7x3.5inch
[Weight] Approx. 360g / 12.6oz
[Depth rating] 60m / 200ft
[Construction] Corrosion-resistant aluminum alloy (alumite coating, antireflection coating)
- Dome: Acrylic
- Shade: ABS resin
Zoom in with double tapping.