Nikon Nikonos RS, the latest in the Nikonos series. Still film-based, but with autofocus, SLR viewfinder and underwater depth of coverage increased to 100 metres. A sturdy, all-round camera weighing in at 3Kg234, complete with 50 MM lens, it's even lighter underwater! Bayonet mount for R-UW 13 mm, 28 mm, 50 mm lenses and dedicated 20-35 mm zoom lens. A 6V battery powers the film advance/rewind motor, autofocus and exposure control via the built-in light meter.
As the manufacturer points out, this camera is designed for shooting underwater and not in the open air, due to the special treatment of the lens and the need for correct focusing.