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JB Hi-Fi was established in the Melbourne suburb of Keilor East by John Barbuto in 1974, selling music and specialist hi-fi equipment. [3] Barbuto sold the business in 1983 to Richard Bouris, David Rodd and Peter Caserta, who expanded JB Hi-Fi into a chain of ten stores in Melbourne and Sydney turning over $150 million by 2000, when they sold the majority of their holding to private equity.
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Underwater housings for smartphones are available with a variety of depth ratings and features. These can be less expensive than dedicated underwater photography cameras. The simplest form is a waterproof pouch, best used for shallow-water photography. [6] Some smartphone housings are limited by operating system.
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.
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Passive system underwater cameras let lifeguards inspect multiple underwater views simultaneously from a single location. [ 6 ] [ 7 ] Cameras can cover areas which may otherwise be obstructed. Below water cameras can be paired with above water cameras to provide face-to-body matching if there is an incident where a swimmer needs to be ...
Large unwieldy lighting systems were problematic to early underwater videography. And last, underwater objects viewed from an airspace with a flat window, such as the eye inside a mask or the camera inside a housing, appear to be about 25% larger than they are. The photographer needs to move farther back to get the subject into the field of view.