The Wisdom of Buying an Underwater Digital Camera
It is inevitable at some point in time, your camera would experience the shock of water. Now, if your equipment is not a weatherproof or underwater digital camera, youre in a bind. To prevent this kind of situation, you may want to invest in an underwater digital camera just to be on the safe side. You never know. The weather is pretty unpredictable and it would prove to be unforgivable when faced with your camera.
You basically have two options when buying underwater equipment. You could go for underwater digital cameras or underwater housings. A lot of manufacturers of digital cameras produce underwater digital cameras that can endure more than 100 feet underwater without getting destroyed. You could also buy housings for your camera to add more security.
Underwater images are usually attained through placing a digital camera in a waterproof underwater housing. This gives you more options because you can use housing that can go with your normal camera. You can even use the various lenses in your collection. Underwater photographers usually use macro lenses or lenses that provide wide angles because both allow them to focus closely on the subject. They eliminate the propensity for water to get in between the subject and camera. It is impossible for you to change your film underwater and underwater digital cameras can only take about 35 frames. So underwater photographers prefer housing to protect their digital cameras.
Underwater housing equipment is fitted with controls that allow you to gain access to your camera inside. It gives you the freedom to use the cameras functions. You can also affix an external flash by way of a connector on the housing. Your underwater housing would block the basic flash of your camera so it is crucial to bring an external flash.
However, there are optical issues when you use cameras that are sealed tight inside underwater housing. Water refraction causes the image to become distorted when it goes through the cameras glass port. This problem is common when you use wide-angled lenses. In this case, you can use a port that is shaped like a dome so that the distortion would not happen. Manufacturers these days include dome ports in underwater housings. They often design them to be utilized with certain lenses so they would be more effective.
A few of the digital cameras made today dont have built-in wide lenses that are sufficient enough for underwater photography. Manufacturers also made housings that have additional optics aside from the dome port so that the angle would be wider. When you use macro lenses, distortion that is a result of refraction is not a problem so a normal glass port can be used. Refraction is actually an advantage for a macro lens. This allows the photographer to take pictures of small subjects.
So if you want to pursue underwater photography, you just have two choices underwater digital camera or underwater housing. It is up to you to pick the better choice to produce the best stills.
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