Silence noisy photos: want to take sharp low-light photos without the glare of a flash? How about capturing high-speed daytime action, such as your kid's debut as a soccer goalie? By using your camera's menus to increase the ISO setting, you can capture tricky shots such as these and expand your picture-taking options--but at a cost.(use of Photoshop CS2 and Photoshop Elements 3)

Macworld, October, 2005 by Heid, Jim

Raising the ISO will also increase the amount of image noise--unsightly flecks that can make it look as if you took your picture during a digital snowstorm. Because image editors have trouble distinguishing these errant particles from legitimate image details, removing noise can be a challenge. Both Adobe Photoshop Elements 3 ($90; www.adobe.com) and Photoshop CS2 ($599) provide a Reduce Noise filter that can minimize image noise. But getting the best results requires a deft touch.

What Causes Noise

When you raise your camera's ISO setting, you essentially make it more sensitive to light. This makes low-light photos easier to shoot because exposure times are shorter, decreasing the chance of blurring. By day, the faster shutter speeds help...

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