Nauticam N120 0.57x Wide Angle Conversion Port 2 (WACP-2)

The WACP-2 is a water-contact wide-angle conversion port optimised for full-frame 14mm lenses, producing an unparalleled 140-degree field of view while retaining full zoom-through optical capability. Building on the WACP-1, it delivers an ultra-sharp, low-distortion, close-focus image and - unusually - can also focus in air, allowing over-under images and topside filming in wet environments. With the Nikkor Z 14-30mm f/4 S, for example, it covers an 81 to 140-degree field-of-view range. Construction is 4 elements in 4 groups with an N120 port opening; dimensions 280 x 213mm, weight 7.35kg in air (0.27kg in water), depth rated to 100 metres.

Worth noting: a radical new shade design extends past the front element at longer focal lengths (and during transport) to protect the dome, then cantilevers outward at wider focal lengths to prevent vignetting. Lens compatibility testing is ongoing - check the current port chart before purchase.

Manuals and port charts: Nauticam port charts.