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Photoshop CC: The Missing Manual by Lesa Snider

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Noise Reducers

If you’ve taken a photo in low light or if you set your camera to a high ISO (a setting that increases its sensitivity to light), chances are the image has a ton of noise—grainy-looking speckles—in it. While you’ll find a couple of noise-reducing tricks in Chapter 12, if the image is really important, you can spring for one of these noise-reducing plug-ins instead.

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