Weefine WFL14 Underwater Ultra-Wide Angle Conversion Lens

The Weefine WFL14 is a professional-grade underwater conversion lens that transforms an action camera’s 156° field of view on land to an impressive 150° underwater ultra-wide perspective. Built with premium optical glass, a polycarbonate dome, and advanced coatings, it delivers sharp, high-quality wide-angle images even in challenging underwater conditions.

Key Highlights

• Converts action camera 156° FOV (land) → 150° FOV (underwater)
• 4-element, 4-group construction (3 optical glass + 1 polycarbonate dome)
• Broadband Anti-Reflection (BBAR) multi-coating for <0.5% reflectivity
• Custom-designed lens hood to minimize flare and protect optics
• M67 × P0.75 thread mount for direct housing attachment
• Depth rated to 80 m (262 ft)
• Durable anodized aluminum barrel and optical-grade polycarbonate dome
• Ideal with natural light, video lights, or external strobes

Technical Specifications

Lens Construction

4 elements in 4 groups (3 glass, 1 polycarbonate)

Dome

Optical-grade polycarbonate resin

Barrel

Anodized aluminum (Type II hard coating)

Coating

Multi-layer Broadband Anti-Reflection (BBAR)

Mount

M67 × P0.75 thread

Magnification

1.04×

Depth Rating

80 m (262 ft)

Dimensions

Ø116 × H49.7 mm

Weight

390 g (air) / 250 g (underwater)

Compatibility

Designed for action cameras with ultra-wide lenses (156°). Water is an integral part of the optical design — the gap between the WFL14 rear lens and housing port lens should fill with water (no trapped bubbles) for optimal results.

Field of View Conversion

• 156° (camera) → 150° (underwater)
• 151° (camera) → 142° (underwater)
• 145° (camera) → 134.1° (underwater)
• 138° (camera) → 126.4° (underwater)
• 122° (camera) → 110.2° (underwater)
• 113° (camera) → 101.6° (underwater)
• 100° (camera) → 89.6° (underwater)
• 90° (camera) → 80.6° (underwater)

Installation & Use

1. Align the lens with the 67 mm thread mount on the housing.
2. Turn clockwise until securely locked in place.
3. Rotate the lens hood to the correct orientation.
4. Tighten the hood set screws.

Tip: When using external strobes, avoid pointing the flash directly at the lens to prevent ghosting. Use zoom if vignetting occurs until dark corners disappear.

Care & Maintenance

• Always rinse in freshwater and use lens caps during transport.
• Do not expose to high heat, boiling water, or direct sunlight.
• Avoid organic solvents or harsh cleaners on the dome.
• Apply a small amount of silicone grease to the thread to prevent corrosion.
• Handle carefully — dust or grit can damage optics.
• Never look at the sun through the lens.