Join Tim Grey for an in-depth discussion in this video Noise reduction, part of Photoshop: Raw Workshop (2013).
Just by virtue of the fact that it's called noise, you can probably appreciate …that noise in a digital photograph is not generally regarded as a good thing. …Noise is exhibited as random variations in tonal or color values at the pixel level. …And if we zoom in, we're sure to find noise in this image, because this …particular image was captured at a very high ISO setting. …You can see, up at the top right, the ISO setting is at 6,400 ISO.…
That's a high value, and it means lots of amplification was applied to the signal …that was captured by the image sensor, and that leads to noise. …And yet, when I zoom in, you might think that the noise is not all that bad. …Sure, there are some variations in luminance value, but it sort of looks …like film grain. It doesn't look too terribly problematic. …But actually, the noise is worse than it appears. …I'll go ahead and switch to the Detail tab in Adobe Camera Raw. …And if you take a look at the Noise Reduction section, you'll see that the …value for Color Noise Reduction is set to a default of 25.…
- Opening raw captures
- Setting Camera Raw preferences
- Zooming and panning
- Processing multiple images
- Image rotation, cropping, and straightening
- White balance and tonal adjustments
- Sharpening and noise reduction
- Split toning
- Compensating for lens vignetting
- Focused adjustments
Skill Level Beginner
1. Adobe Camera Raw Overview
2. Basic Adjustments
3. Advanced Adjustments
4. Focused Adjustments
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