Extreme photography and underwater photos are great ... as long as your digital camera is useable underwater. If you aren't sure whether your camera is rated as waterproof, read the user manual or visit the manufacturer's Web site. Ignoring the user manual and testing the digital camera in a full bathtub to determine whether it is waterproof is not recommended.
If you'd like to take these types of photos, you'll either need an underwater digital camera, as specified by the manufacturer, or you'll need to purchase an underwater housing for your digital camera. Here are some of the best underwater digital cameras and accessories.
Canon
Canon offers many underwater housing units designed for its specific models and brands of digital cameras. In addition to being able to purchase the underwater housing units at the Canon Web site, you'll also find advice for using your model safely underwater.
When photographing underwater, there are three shooting techniques you will find particularly useful as they enable you to produce remarkable and appealing pictures without elaborate set-ups.
Macro Shots
For small underwater subjects, choose the Macro Mode. Move to within minimum focusing distance of your subject and depress the shutter button halfway. Then using the LCD monitor, move the camera to sharpen your image. Finally, press the shutter button all the way to take the picture. Utilize the flash diffusion plate on the case to ensure even underwater flash lightin
Wide Angle Shots
The first thing to master with wide-angle shots is keeping the water color blue. To keep water looking blue, first set the White Balance*: choose "Daylight" in shallow water and "Cloudy" for greater depths. Then, get below your subject. Aim upward towards the sky to create dramatic silhouettes.
*If your PowerShot digital camera has Underwater Scene Mode, select it for the best results when shooting underwater
Panorame Shots
First, select the Stitch Assist Mode on your PowerShot digital camera. Shoot a series of overlapping images. Then use the PhotoStitch Software, supplied with your camera, to automatically combine images into a breath-taking panorama on your computer
On Land
You can also use your Canon Waterproof Case on land — in environments where snow, sand, excess humidity or dust could lead to damage. Ideal for skiing and many other activities, a Canon Waterproof or All-weather Case provide an added measure of safety for your PowerShot camera on land.
Preparation and care
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