My life as a mermaid, swimming, selfie, Amsterdam ephemera
© www.anniewrightphotography.com

My life as a mermaid immortalised with a selfie taken right after my second ever swimming class. I’ve started swimming under water and a whole new world’s opened up for me. All I need now is a waterproof camera!!!

Underwater photography

Underwater photography is the process of taking photographs while under water. It is usually done while scuba diving. However, it also occurs while diving on surface supply, snorkeling and swimming. Additional options include using a submersible or remotely operated underwater vehicle or by lowering automated cameras from the surface.

Underwater photography can also be categorised as an art form and a method for recording data.

Successful underwater imaging usually involves specialized equipment and techniques. Nonetheless, it offers exciting and rare photographic opportunities. Animals such as fish and marine mammals are common subjects. But photographers also pursue shipwrecks, submerged cave systems, underwater “landscapes”, invertebrates, seaweeds, geological features, and portraits of fellow divers.

Equipment I will be considering in the future

Some cameras – such as  modern waterproof digital cameras – are specific for use underwater. The first amphibious camera was the Calypso, which was reintroduced as the Nikonos in 1963. 

Cameras made for dry work can also function underwater by means of add-on housings. These are available for point and shoot cameras, compact cameras with full exposure controls, and single lens reflex cameras (SLRs). Moreover, materials range from relatively inexpensive plastic to high-priced aluminum.

Lenses

Underwater photographers generally use wide-angle lenses or macro lenses. These allow close focus and therefore a shorter distance to the subject, which reduces the loss of clarity due to scattering. Digital media can hold many more shots than standard film (which rarely has more than 36 frames per roll). This gives digital cameras the edge, as it is impractical to change film underwater. Other comparisons between digital and film photography also apply. Hence, the use of film under water has declined, as it has on land.

Source: https://en.wikipedia.org/wiki/Underwater_photography