Nikon has announced a 17-28mm wide-angle zoom for Z mount cameras. It features a constant aperture of f/2.8, but perhaps more relevant for underwater use, has a minimum focus distance of 0.19m (7.5”). Of course, performance behind a dome port is, as yet, unknown.
Nikon has announced the Z MC 105mm f/2.8 VR S Micro lens. It is the first macro lens with the Z mount, and this offers a “dramatic improvement in optical performance.” The minimum focus distance is 0.29 m with a 1:1 reproduction ratio, and it is equipped with a new AF stepping motor.
Nikon has announced 2 new Z mount lenses. Of interest for underwater use is the Z 14-24mm f/2.8 wide-angle lens. It has a minimum focus distance of 0.28 m (0.92 ft), so may work behind a large dome port.
Inon has announced the Z Adaptor MV 1/4-20 UNC. This allows a ball to be attached to a standard tripod fitting on a camera or housing. In addition, the comoan has released a series of adaptor screws that allow the Z Adaptor to be used with their Mount and Lens Adaptor bases.