Liquid Photography

There are many types of lenses which are designed as per the requirements one needs underwater. Some lenses are designed keeping in mind the challenges one face in underwater photography.

The types of lenses are-

1. Prime Lenses – A 20mm, 60mm and 100mm lenses are the examples of prime lenses. A lens which is directly attached to the body of the camera is known as prime lens. Prime lens are optically superior lenses. The only disadvantage of these lenses is that they cannot be removed during a dive.

Take any random underwater photograph and it has made use of a submersible flash unit also known as ‘strobe’ or just ‘flash’. Understanding strobes or Flash is a very essential  part  of  underwater  photography  as  they are the source of illumination.

• Need for Strobes
  Underwater photography is all about dim waters without the lack of strobe. As water is dense, ambient light levels are quite dim. This is where strobes come to rescue by providing high intensity light that illuminates the subject. A complete palette of colors within the angle of coverage is provided by a strobe.

Photography is a challenging past time and requires a lot of detailed research when being pursued. The difference in the refractive indices of water and air and the density of water determine the color and quality of the image being taken. Many a times, a photographer captures a colorful and bright image underwater but is disappointed by the resultant effect. Underwater environment is monochromatic and produces a blue or green haze effect on the images, depending upon the location. This happens because of water that filters red light. The extent of filtration of the red spectrum increases with increase in depth of diving.