In many ways underwater photography is much more difficult than the land photography most of us are familiar with. It's an expensive activity. However, when things turn out well and you have a set of beautiful photos from your diving vacation, all the difficulties seem to fade away, and you can't wait to try again.
can't get beneath the surface! Actually, if scuba certification is not in the cards for you, there's always the possibility of doing photography while free-diving (snorkeling). Certification alone won't cut it though. If you are comfortable in the water and have excellent buoyancy skills, you are far more likely to succeed in your photographic efforts .
Underwater photo equipment - Cameras, strobes (flashes), lenses, strobe arms and connectors are among the seemingly endless supply of equipment you will need to make photos beneath the waves. It's definitely an equipment intensive endeavor. Renting camera equipment is possible initially to see if it's something you'd like to try, but this gets prohibitively expensive after a few days.
Lots of money - Unfortunately, underwater photo equipment are not cheap. To do it right will cost many hundreds, if not thousands, of dollars. Traveling to dive locations also will soak up your hard-earned cash. Independently wealthy types without the need to work definitely have an advantage. Even on a limited budget though, it's possible to do some nice photography.
diving may only be minutes away, it's not difficult to dive on a consistent basis if you can find the time. If you're even luckier, your dive buddy has a boat! Most people live many miles from the nearest body of water, however, which certainly limits diving opportunities.
Photographic knowledge - If you jump in the water with an expensive camera system but a total lack of knowledge on how to use it, you'll probably find that your photos turn out quite disappointing. Even with cameras that automate focus and exposure, you should still have an understanding of exposure control, aperture settings, focus, composition basics, and other aspects of photography.
More Training - Underwater photography is fraught with frustrations and challenges. It takes many dives to form a nice collection of images. Only by repeated attempts and learning from your mistakes can you develop the skills and techniques for producing award winning photos.
Special cameras for underwater like Nikonos (Amphibic)- A submersible viewfinder camera that is compact and relatively easy to use. With this system you must estimate focus distance since it is not a view through-the-lens type camera. This also can present difficulties in composing your image.
Housed camera - Many 35mm land cameras can be provided with an acrylic or aluminum water-tight housing that retains many of the camera's functions. This enables through-the-lens viewing for accurate focus and composition control. A disadvantage is the increased bulk and expense. A variety of manufacturers produce underwater housings; most are designed for either Canon or Nikon cameras.
There is no single "magic" lens for underwater photography. Depending on your photographic subject, wide-angle, close-up and zoom lenses can be used with housed camera systems. The Nikonos system is limited to a smaller selection of lenses. One of the "rules" of underwater photography is that you will probably have the wrong lens when something great shows up (like having a macro lens set-up when the gray whale swims 10 meters away).
Underwater photography is usually divided into four categories: general, macro or close-up, fish portraits, and wide angle . Make sure that you buy gear that will help you take photographs in your particular area of interest. This includes lenses, light sources, etc.
Another vital component of the underwater photographer's arsenal is a flash unit (or a pair), which is typical called an underwater strobe. Ambient sunlight is quickly sucked up by the aqueous environment, making an artificial source vital for most types of underwater photography.
light plays a role in the image, and as the primary light source for close-up subjects and some types of wide angle photography. To hold the strobe (or strobes) in position, you'll need a set of arms that can be manipulated to hold them in their desired orientation.
Throw in extension tubes, housing ports, light meters, batteries, film and processing , strobe cords, carrying cases, scuba equipment (a whole other way to spends lots of money), and a seemingly unending list of small but not necessarily insignificant items, and you're on your way
If you scare from diving, just send them to deep…