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A Nikonos V amphibious camera Underwater housing for SLR with dome port, arms and lights. Some cameras are made for use underwater, including modern waterproof digital cameras. The first amphibious camera was the Calypso, reintroduced as the Nikonos in 1963. The Nikonos range was designed specifically for use underwater.
Norwegian diving pioneer Odd Henrik Johnsen with underwater camera (1960's) Underwater camera, strobe (flash), video lights and housing - for underwater photography or underwater videography; Diving reel, dive spool or line holder to store and transport a distance line or line for a surface marker buoy.
Previously the size of the video camera was also a limiting factor, necessitating large housings to enclose the separate camera and record deck. This results in a larger volume which creates extra buoyancy requiring a corresponding use of heavy weight to keep the housing underwater (about 64 lbs. per cubic foot of displacement or 1.03 kilogram ...
Baited cameras are highly effective at attracting scavengers and subsequent predators, [1] and are a non-invasive method of generating relative abundance indices for a number of marine species. [ 2 ] As a non-extractive technique, it offers a low environmental impact way of understanding changes in fish numbers and diversity over time.
They are generally not important for dive safety, but are required for the video camera to get an acceptable image quality, either for video recording, or for the surface team to monitor the work done by the diver. Modern underwater video lights are now relatively small, have run times of 45–60 minutes and output 600–8000 lumens.
The word entered the Russian language as the generic noun акваланг ("akvalang"). That word was taken into Lithuanian as the generic noun "akvalangas"; "langas" happens to be Lithuanian for "window", giving a literal meaning "aqua-window". In the United States, U.S. Divers managed to keep "Aqualung" as a trademark.