SEACAM Optical Precision Port
Precision underwater flat-port system for world-class wide-angle imaging
The Seacam Optical Precision Port is a water-correction optic designed to give you the same image quality underwater that your lens delivers on land. Used with a compatible Seacam housing, it forms a complete optical system that keeps corner sharpness and depth of field high, even with demanding wide-angle lenses.
Built on a refined Ivanoff-Rebikoff lens concept, the OPP uses a multi-part internal lens stack and a flat front glass that sits directly in the water. This design takes advantage of water’s refractive properties to “transform” the image path from water back to air, all in a compact, travel-friendly package that is close in weight to the Seacam Superdome but much smaller in packing size.
- Land-quality images underwater: Water-correction optics are tuned so your supported lenses keep their familiar sharpness and depth of field below the surface.
- Flat front glass with internal optics: The multi-coated optical element is protected inside the port, while the flat external glass gives practical scratch protection and easy cleaning.
- Compact and travel-friendly: Small overall dimensions, removable lens hoods, and weight comparable to the Superdome make it easy to fit in modern baggage limits.
- Lens-specific correction system: A dedicated correction lens screws onto your camera lens and works with matching Seacam bayonet port extensions to form a precisely matched unit.
- Flexible, neutral-handling setup: Specially shaped extensions can support multiple lenses, help keep the rig close to neutral underwater, and even double as storage protection during transport.
- Ready to use out of the box: Supplied with matching lens caps and a neoprene cover to protect the port when you’re not in the water.
Flat Front Glass for Sharp Corners
Unlike traditional dome ports, this system uses a flat front-glass element combined with internal optical correction to deliver corner-to-corner sharpness underwater.
- Flat front reduces refraction artefacts and improves DOF
- Multicoated glass inside for scratch resistance and clarity
- Ideal for rectilinear wide-angle zooms where dome curvature limits performance
Travel-Friendly Compact Form
Engineered to take up less luggage space without compromising optical performance. According to SEACAM, it matches the weight of their Superdome model while offering almost half the size.
- Smaller diameter and shorter depth than many dome ports
- Removable lens hood helps with transport and storage
- Ideal for carry-on baggage limits and frequent travel divers
Modular Correction Lens System
The system includes a dedicated optical correction lens that screws onto your camera lens and a bayonet-mounted port extension ring, creating a precisely matched optical unit.
- Correction lens adapts to specific zoom or prime lens used
- Bayonet extension ring enables changing lenses without full port swap
- Ensures best possible image quality matching land-lens performance underwater
Perfect for…
- Wide-angle reef and wreck divers who use full-frame lenses and want maximum sharpness
- Traveling underwater photographers needing compact kit that fits carry-on baggage
- Mixed light and ambient light shooters who demand corner performance in large sensors
- Hybrid shooters switching between wide and mid-wide zooms without changing ports
Pros
- Exceptional optical performance with flat-front design and internal correction lens.
- Compact and travel-friendly size compared to many dome ports.
- Modular system allows lens changes with same port extension and correction lens framework.
Cons
- Higher cost than standard dome ports; list price ~ €4,950 (excl. taxes/shipping).
- Requires correct matching of lens-specific correction lens and port extension—adds complexity.
- Not optimized for fisheye extreme wide or dedicated macro without alternate components.
SEACAM is a premium Austrian brand known for precision underwater imaging systems and supports its gear via global dealers. This product is backed by the retailer’s return policy and expert lifetime advice from Bluewater Photo’s support team.
Free shipping over $200 · Lifetime support included
Equip your underwater rig with the clarity and precision of the Optical Precision Port and dive deeper into what your wide-angle lens can truly deliver.
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Specifications
- Build – Material: High-grade aluminium alloy and multicoated optical glass.
- Build – Dimensions (L×W×H): Placeholder – verify exact measurement.
- Build – Weight (land): Equivalent to SEACAM Superdome; exact value not publicly specified.
- Sealing & Depth – Depth Rating: Depth rating depends on housing; confirm with specific housing configuration.
- Sealing & Depth – Vacuum/Leak Alarm: Supported via SEACAM vacuum system (optional).
- Ports & Optics – Port System: SEACAM bayonet mount for Optical Precision Port (OPP) system.
- Ports & Optics – Supported Wet Optics: Requires lens-specific optical correction lens depending on camera/lens combo.
- Controls & Ergonomics: Uses standard SEACAM housing controls; port extension accommodates neutral buoyancy.
- Lighting/Sync: Standard SEACAM interface for strobes and flashes – port does not affect sync gear.
- Power/Other: Accessories included: matching lens caps and neoprene cover.
- Compatibility: See SEACAM official port-chart and correction lens list
SEACAM Optical Precision Port — FAQ
- Does this port fit my SEACAM housing?
It fits SEACAM housings that support the OPP bayonet system and use the correct port-extension ring. Please verify compatibility with Bluewater Photo or SEACAM for your specific camera/lens/housing combo.
- Do I need a dome port or this flat port for wide-angle?
This flat-port system is designed to deliver better corner sharpness than a dome for rectilinear wide-angle lenses underwater. If you use fisheye lenses or prefer the classic dome look, a dome port may still be appropriate.
- Which lenses are supported by the OPP system?
The system supports lenses for which SEACAM offers a dedicated correction-lens and port extension. A full list is available via the SEACAM port-chart. Please verify this specification with Bluewater Photo before purchase.
- Is the port heavy or bulky for travel?
SEACAM states the OPP has size and weight “equivalent to our Superdome but half the size”, making it travel-friendly.
- What’s included in the box?
Includes the OPP front unit, bayonet port extension ring, lens caps and a neoprene cover. Additional correction-lens for your specific camera/lens may be required.
- Precision Port
- Extension Tubes
- Correction lens
We offer lifetime support with all purchases.
Please call or email us with any questions; our knowledgeable staff would love to assist you.
- Precision Port
- Extension Tubes
- Correction lens
SEACAM Optical Precision Port — FAQ
- Does this port fit my SEACAM housing?
It fits SEACAM housings that support the OPP bayonet system and use the correct port-extension ring. Please verify compatibility with Bluewater Photo or SEACAM for your specific camera/lens/housing combo.
- Do I need a dome port or this flat port for wide-angle?
This flat-port system is designed to deliver better corner sharpness than a dome for rectilinear wide-angle lenses underwater. If you use fisheye lenses or prefer the classic dome look, a dome port may still be appropriate.
- Which lenses are supported by the OPP system?
The system supports lenses for which SEACAM offers a dedicated correction-lens and port extension. A full list is available via the SEACAM port-chart. Please verify this specification with Bluewater Photo before purchase.
- Is the port heavy or bulky for travel?
SEACAM states the OPP has size and weight “equivalent to our Superdome but half the size”, making it travel-friendly.
- What’s included in the box?
Includes the OPP front unit, bayonet port extension ring, lens caps and a neoprene cover. Additional correction-lens for your specific camera/lens may be required.
