Nauticam 230mm Optical Glass Fisheye Port

High-end glass dome port, 2nd generation — now depth-rated to 100 metres

The Nauticam 230mm optical glass fisheye port is the ideal choice for ambitious underwater photographers seeking top-tier image quality. The updated second generation features an improved glass front, enabling a 100 m depth rating.

Nauticam’s optical glass dome ports are crafted with maximum precision using state-of-the-art manufacturing. Each port is finely ground and treated with a multi-layer broadband anti-reflection coating to minimise flare and maximise sharpness.

With its 230 mm diameter, this optical glass wide-angle port is especially well suited to ultra-wide and fisheye lenses for DSLR and mirrorless cameras.

Compatible lenses (selection)

• Nikon AF-S NIKKOR 16–35mm f/4G ED VR
• Nikon AF Fisheye 16mm f/2.8D
• Nikon AF-DX Fisheye 10.5mm f/2.8G ED
• Sigma 15mm F2.8 EX DG Diagonal Fisheye
• Canon EF 16–35mm f/2.8L II USM
• Canon EF 16–35mm f/4L IS USM
• Canon EF-S 10–18mm f/4.5–5.6 IS STM

Technical specifications

• Max depth rating: 100 m
• Port system: N120
• Weight: 2.67 kg
• Lens opening: 109 mm
• Port diameter: 230 mm
• Body material: anodised aluminium alloy
• Port material: optical glass
• Coating: multi-layer broadband anti-reflection (inner)
• Shade: removable, ABS
• Spare O-ring: #90140

Tip: The large diameter and premium glass optics deliver crisp, high-contrast underwater images — from sweeping reef vistas to striking big-animal portraits.

Category: Nauticam 230mm, glass fisheye port, underwater dome port, wide-angle dome port, fisheye dome port, Nauticam N120 port, underwater photography accessories, optical glass dome port, DSLR underwater dome, mirrorless underwater port