A Guide to Underwater Cameras
There are two types of underwater camera systems: an ""amphibious"" camera, which is a self-contained waterproof system, and an SLR land camera with waterproof housing. Amphibious systems are small, compact, and easy to travel with, while SLRs offer more advanced features, such as auto-focus, advanced exposure control, and through-the-lens viewing.
The ""amphibious"" cameras are probably best for those of you who want a simple, easy-to-use point-and-shoot camera. Amphibious systems usually have a built-in lens and they will take pictures on land as well as underwater. They also have an automatic film load and advance and are generally compact, lightweight, and rugged.
If you are a more serious photographer and want the advantages of a single-lens reflex camera you will probably be happier with a land camera in waterproof underwater housing.
As a new underwater photographer you need to know the difference between taking pictures on land and underwater. The difference is what you are shooting through to take the picture. Air is transparent, whereas water is not. Light does not travel in a straight path underwater like it does in air. Water is denser and it includes particles of sand, plankton, and other debris which scatter, reflect, and absorb light.
You should know that all your underwater equipment needs and requires special care. Salt, sun, dirt and improper storage can damage a camera. Even though all your new stuff is made from rugged materials built for underwater use, it still needs to be rinsed in fresh water after every use. Saltwater should never be allowed to dry on the joints of the controls and metal fittings. Salt is your system's number one enemy. Do not rinse with a hose. The high pressure may actually force salt crystals and sand into crevices. Use only soft lens tissues or photographic lens cloths on the lenses.
The most important thing you need to know about your underwater camera care is how to clean and lubricate the O-ring after every use. The O-Ring creates a watertight seal to protect your equipment from water, and so it is very important. The seal must be flawless- with no scratches, cuts, sand, hair ? nothing on its surface. If it is not, the underwater photo equipment will be ruined. Water must be kept out! When in doubt about the sealing capability of an O-ring, always throw it out and replace with a new one.
Both your camera and your flash will need a watertight housing. You can use a flash fill-in to brighten underwater subjects at close range. Even with large flash units, though, light does not extend beyond 12 feet. The maximum effective distance of most flashes is four to five feet. Subjects farther away will not appear very colorful. Don't forget you need to wait for your flash to recycle.
Assess conditions underwater before you dive and set aperture and shutter speed before entering the water.
The best time to take pictures without using a flashgun is between 11 a.m. and 2 p.m., when the sun is overhead. To capture sunrays with the subject in silhouette, face the sun. Close-up shots of fish are best taken at night--the fish are sleepy and not as active
Shallow water near steep rocky shorelines, coral reefs and atolls, and areas near tidal streams are great places to photograph sea-life.
Disposable Cameras Info provides detailed information about digital, wedding, and underwater disposable cameras, as well as cheap and wholesale disposable cameras. Disposable Cameras Info is the sister site of Underwater Cameras Web.
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Is your Digital Camera Compatible With Your Computer?
So you recently bought a digital camera or perhaps your thinking about it. And perhaps you may be wondering how many pictures will your computer hold? First you need to answer a few questions to come to an accurate conclusion. First, how big is your hard drive and how much free space does it currently have? You can find the answer to that question by first left-clicking on "My Computer:" Right-click on "C drive." A menu should appear. Left-click on "Properties." A pie chart should be displayed that will show you the size of the hard drive and how much of the disk drive is free. Your next step is too know how many mega pixels does your camera have? A pixel is a light sensing cell on the image pickup device.
Use A Tripod!
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A Guide to Underwater Camera Cases
If you are buying a new underwater camera or video camera, you will need an underwater camera case. And this case needs to be watertight, airtight, dustproof, crush resistant and designed to keep your valuable equipment safe from all the elements. It may also be rustproof, pest-proof, and chemical resistant to oils, fuels and solvents. It may have flame retardant included and be molded with a UV stabilizer, making it ultraviolet resistant. (This will prevent the plastic from becoming brittle if left in the sun for extended periods of time.)
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Everybody is Fixing Their House or Apartment Up These Days. Use That Digital Camera to Capture
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