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For the widest rectilinear wide angle optics underwater, check out the new WACP-2 for 14mm full frame lenses
The Nauticam Wide Angle Conversion Port (WACP-1) is a revolutionary new port that is equipped with the best wide-angle, water-contact optics on the market. The WACP-1 is actually a hybrid between a lens and a dry port, and solves many of the problems that makes rectilinear wide angle photography difficult underwater.
While the WACP looks like a standard dome port, upon holding it, the weight alone proves it is much much more, and is really a lens disguised as a dry port. The WACP is a wide angle conversion port which unlike traditional ports or wet corrective wide-angle lenses, modifies a 28mm equivalent lens to an extremely sharp 130º fiels of view. The port attaches to Nauticam housings the same way other Nauticam ports do. The optical lenses behind the dome allow the camera to focus directly on the subject in the water rather than on the virtual image of the dome (as would be the case for a traditional dome port). This is water-contact optics and it's what makes the WACP special for underwater photographers and videographers. Here are some of the benefits of the WACP-1
The WACP-1 is very similar to the incredibly sharp, quality Nikonos lenses of yesteryear, designed specifically, and only intended for underwater use. This port is specific to full frame cameras when using a 28mm lens. See below for a list of compatible lens options.
If you want an even wider option, designed for 14mm equivalent lenses, check out the WACP-2! It can produce a revolutionary 140 degree field of view with a 14mm equivalent lens - the widest rectilinear field of view on the market.
With all the professional optical elements crammed into one port, the WACP can be a little heavy topside. Thankfully, the WACP-1 package includes an aluminum float collar that makes the underwater buoyancy 0.71 lb (0.32 kg) negative.
Canon EOS 5D Mark IV, EF 28-80mm f/3.5-5.6 USM, Nauticam WACP, 1/125, f/7.1, ISO 640
Canon EOS 5D Mark IV, EF 28-80mm f/3.5-5.6 USM, Nauticam WACP, 1/40, f/5.6, ISO 320
Canon EOS 5D Mark IV, EF 28mm f/2.8 IS USM, Nauticam WACP, 1/200, f/14, ISO 160
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