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Noise reduction

From: Photoshop CS5 for Photographers: Camera Raw 6

Video: Noise reduction

Almost every image that you capture could benefit from it being worked on inside of the Detail panel. And in the Detail panel what we can do is work on Sharpening and also Noise Reduction. Here we are going to focus in on Noise Reduction. To select or to target the Detail panel, we can either click on the icon here, or we can press our shortcut. On a Mac it's Command+Option+3, on a PC, that's Ctrl+Alt+3. Now, you notice down at the bottom it says for a more accurate view, you need to zoom in to 100% or higher.

Noise reduction

Almost every image that you capture could benefit from it being worked on inside of the Detail panel. And in the Detail panel what we can do is work on Sharpening and also Noise Reduction. Here we are going to focus in on Noise Reduction. To select or to target the Detail panel, we can either click on the icon here, or we can press our shortcut. On a Mac it's Command+Option+3, on a PC, that's Ctrl+Alt+3. Now, you notice down at the bottom it says for a more accurate view, you need to zoom in to 100% or higher.

And we need to do that because we can't really discern if the Noise Reduction or the Sharpening is good if we are zoomed out. So let's zoom in to 100%. There are a few different ways you can do that. You can either double-click the Zoom tool, or of course you can click on the Zoom pulldown menu and then choose 100%. Or if you prefer the shortcut, on a Mac it's going to be Command+Option+0; on a PC, that's Ctrl+Alt+0. Well, use whatever technique you prefer to zoom in to 100%, then press the Spacebar key to access the Hand tool.

And click and drag to pan around the image to become familiar with some of the issues with this particular file. Well, here, one of the things that I notice is that there is quite a bit of noise. I can see a lot of noise in the background in regards to the color. I also see a lot of Luminance Noise. Let's go ahead and zoom in even closer, simply for demo purposes, so that we can really see the noise issues here. Now, you are going to discover noise in your files in a lot of different areas, and some noise is going to be simply because of the content.

For example, sometime skin has a lot of variation. So you may see a little artifacting or strange noise, or sometimes you will see this in the shadow areas, in the deeper tones, or a lot of times you will see it in skies, or in backgrounds. Well, when we see noise all over the place, what I want to do is first focus in on Color Noise, because that's a little bit easier to understand. Well, down here you will notice I have two controls for color. The first one is simply the Color slider. When I click on that, it then activates the Color Detail. Now, the higher I take this, the less color variety I will have.

Let's exaggerate this so we can see what's happening here. All right. Well, one of the things that we can see is, yeah, the background looks great. It almost looks like it's just gray rather than colorful. But I also removed color in the face in that same way. There isn't as much color variety. As a matter of fact, the eyes aren't even blue anymore. We will click on the Preview check box. Here is before, and then here is after. We also notice that the lips aren't really differentiated from the teeth. So we have removed so much Color Detail that it's now negative.

So we have gone too far. So what we typically need to do is to take this control down and then slowly bring it up and just look to reduce or remove the color variety that's distracting from the image, in this case probably right about here. And then if we want to see our before and after, press the P key, here is before, and then of course here is after. Now, we should do a lot of this work at 100%. So I am going to zoom back to 100%. I will do so by double-clicking my Zoom tool. This will really help me determine if I have reduced an appropriate amount of this Color Noise.

Let's press the P key. Here we have it, before and then after. On my monitor, this is looking really nice. Okay. Well, what about Color Detail? Whenever we reduce noise, we are actually losing a sense of dimension, because Color and Tone gives us dimension and variance and difference. So we can modify this to have less details, or we can crank this up to have more details in the color areas. Now, the one thing I want to say about this control is that it does apply a pretty subtle effect. Certain images will benefit from this more; others won't.

But typically, right around the middle is going to be a pretty good spot for this Color Detail amount. All right. Let's move to another area of Noise Reduction, and that is Luminance Noise. Here we have three controls. What we can do is click and drag this up, and let's exaggerate things a bit, and let's drag this all the way up. Now, when I do that we can see that, yes, we reduced a lot of the noise variance that's based on luminosity, or brightness value. But also the structure of the image is changing. Let me show you what I mean.

If we reduce the details, so we don't have many details in the frame, everything is completely smudged out. We have lost Dimension. We have lost Texture. We have lost Shape. So this Luminance slider, again, can be taken too far. Let's keep it here in order to understand what's happening. Without any detail, how then does Contrast work? Well, if we increase the Contrast amount, what we are going to see it that this slider kind of saves the day, in a sense. Again, here is no Contrast, and then here is a lot of Contrast.

So what it's trying to do is to rebuild Dimension or Shadow or Shape. And so this Contrast slider can really help us out. Well, obviously at this juncture, these settings aren't very good. What are more realistic settings for an image like this? Let's go ahead and double-click all these controls to take them back to their default setting, and then let's start off with our Luminance amount. What we want to do with Luminance is we want to just bring this up to where we start to see that the luminosity variance, the little texture in the background, is being reduced.

We also then want to dial in our Luminance Detail. And one of the things that I have discovered is that Luminance and Luminance Detail like to travel together. Let me show you what I mean. If I crank this all the way up, it's too high. But if I bring up this Luminance Detail amount, it's almost not that bad, because what this did was soften out all the details, and this brought some of them back. So again, just keep in mind that these two like to tend to be near each other. Now, it's not always the case with all images, but in a lot images it is. So right here we have a nice amount of Luminance, Noise Reduction, a good amount of detail, and then I will bring up a little bit of Contrast to add some Dimension.

And now, here this image is looking really good. And keep in mind, with a photograph like this, I don't want it to look too glamorous, too soft, so I want to have a good amount of detail here. If I take this down too far, it's just going to look a little bit soft focus, not quite as edgy or as interesting as I want for a photograph like this. So I will bring in some of those details. Now that I have dialed in all of these controls, I will press the P key. Here we have our before. Press the P key again. Here he have our after. The image is looking a ton better.

Let's zoom in a little bit farther so we can see that even better. Here we have the before and now the after, after we have applied our Noise Reduction.

Show transcript

This video is part of

Image for Photoshop CS5 for Photographers: Camera Raw 6
Photoshop CS5 for Photographers: Camera Raw 6

121 video lessons · 20080 viewers

Chris Orwig
Author

 
Expand all | Collapse all
  1. 8m 57s
    1. Welcome
      54s
    2. Should I use Adobe Camera Raw or Photoshop?
      3m 22s
    3. What is Camera Raw?
      3m 45s
    4. Using the exercise files
      56s
  2. 21m 7s
    1. Bridge overview and preferences
      4m 9s
    2. Camera Raw preferences
      3m 17s
    3. Raw vs. JPG or TIFF files
      3m 5s
    4. Choosing a native raw file or a digital negative (DNG)
      6m 13s
    5. Converting or saving to the DNG format
      4m 23s
  3. 28m 44s
    1. Project overview: Cover photo shoot
      2m 6s
    2. Auto-toning and correcting white balance
      3m 3s
    3. Cropping and composing
      2m 35s
    4. Enhancing color and tone
      2m 39s
    5. Removing distractions
      2m 46s
    6. Sharpening and noise reduction
      2m 29s
    7. Converting to black and white
      2m 24s
    8. Adding a vignette
      2m 10s
    9. Making a localized correction
      1m 45s
    10. Creating snapshots of memorable looks
      3m 11s
    11. Re-editing Camera Raw settings
      57s
    12. Working with multiple adjustments
      2m 39s
  4. 16m 13s
    1. Navigating the interface and the toolbar
      5m 5s
    2. Image adjustment tabs and panels
      5m 8s
    3. Using the histogram
      2m 4s
    4. Previewing before and after different adjustments
      2m 4s
    5. Working with multiple files
      1m 52s
  5. 23m 17s
    1. Opening raw files in Bridge
      6m 3s
    2. Opening JPGs and TIFFs in Bridge
      3m 28s
    3. Accessing Camera Raw from Mini Bridge
      2m 57s
    4. Resizing in Camera Raw with workflow options
      3m 35s
    5. Saving from Camera Raw
      3m 5s
    6. Opening an image as a Smart Object
      1m 41s
    7. Creating a duplicate file
      2m 28s
  6. 13m 56s
    1. Using the Crop and Straighten tools
      2m 23s
    2. Working with the Crop tool
      3m 39s
    3. Cropping with an aspect ratio
      2m 26s
    4. Composing with the Crop tool
      2m 33s
    5. Creative cropping
      2m 55s
  7. 10m 29s
    1. Improving color balance
      2m 23s
    2. Using the White Balance tool and controls
      1m 35s
    3. Color correcting with white balance cards
      2m 31s
    4. White balance vision and creativity
      2m 22s
    5. Color balance resources
      1m 38s
  8. 30m 17s
    1. Deconstructing the basic adjustments
      3m 59s
    2. Recovering highlights
      2m 29s
    3. Making basic exposure enhancements
      1m 59s
    4. Making basic adjustments more quickly
      2m 18s
    5. The relationship between tone and color
      2m 40s
    6. Enhancing color and tone
      1m 9s
    7. Demystifying clarity
      3m 36s
    8. Increasing clarity
      3m 48s
    9. Understanding Vibrance and Saturation
      2m 28s
    10. Improving color with Vibrance
      2m 4s
    11. Using Vibrance and Saturation together
      1m 38s
    12. Color creativity
      2m 9s
  9. 8m 55s
    1. Learning about the parametric and point tone curves
      4m 53s
    2. Using the parametric curve
      2m 7s
    3. Using the point curve
      1m 55s
  10. 15m 29s
    1. Removing blemishes on a face
      4m 36s
    2. Cloning away small background distractions
      3m 37s
    3. Removing distracting background elements
      1m 55s
    4. Cleaning up a studio background
      1m 31s
    5. Removing dust on the lens or the camera sensor
      2m 25s
    6. Removing red-eye
      1m 25s
  11. 46m 13s
    1. Demystifying the Adjustment Brush
      3m 37s
    2. Correcting exposure by brightening shadows
      2m 23s
    3. Painting an effect into a photograph
      4m 41s
    4. Increasing visual interest by brightening shadows
      4m 3s
    5. Increasing visual interest by heightening saturation
      5m 0s
    6. Whitening teeth
      3m 33s
    7. Adding color to makeup
      5m 58s
    8. Changing color
      4m 12s
    9. Selective sharpening
      6m 8s
    10. Eye sharpening and skin smoothing workflow
      4m 28s
    11. Creating custom Adjustment Brush presets
      2m 10s
  12. 11m 33s
    1. Enhancing the foreground and background of an image with the Graduated Filter
      4m 55s
    2. Reducing exposure with the Graduated Filter
      3m 15s
    3. Creative effects with the Graduated Filter
      3m 23s
  13. 33m 26s
    1. Noise reduction
      6m 33s
    2. Reducing noise and sharpening
      6m 36s
    3. Sharpening more effectively
      7m 18s
    4. Edge sharpening in an architectural photograph
      3m 1s
    5. Sharpening a portrait
      2m 3s
    6. Using the Detail panel to soften skin
      7m 55s
  14. 16m 18s
    1. Introducing HSL
      3m 38s
    2. Modifying color and tone
      3m 52s
    3. Enhancing a fashion photograph
      3m 5s
    4. Enhancing color and tone with HSL
      3m 16s
    5. Getting creative with color
      2m 27s
  15. 13m 59s
    1. The black-and-white controls
      2m 43s
    2. A simple black-and-white conversion
      2m 5s
    3. Using multiple panels to create a black-and-white image
      3m 52s
    4. Creating a dramatic black-and-white landscape
      5m 19s
  16. 6m 40s
    1. Traditional black-and-white toning
      3m 26s
    2. Toning a color photo creatively
      3m 14s
  17. 11m 17s
    1. Deconstructing the Lens Correction controls
      3m 48s
    2. Correcting lens vignette
      1m 59s
    3. Correcting lens vignette more quickly
      1m 21s
    4. Correcting chromatic aberration and defringing
      4m 9s
  18. 16m 30s
    1. Understanding the Effects controls
      5m 54s
    2. Using the Post Crop Vignette for creative effects
      3m 23s
    3. Adding film grain to a black-and-white image
      2m 18s
    4. Adding film grain with Camera Raw and Photoshop
      4m 55s
  19. 14m 4s
    1. Introducing the Camera Calibration panel
      3m 39s
    2. Comparing color options with Snapshot
      2m 47s
    3. Creative color with the Camera Calibration controls
      4m 48s
    4. Camera Calibration resources
      2m 50s
  20. 9m 41s
    1. Introducing presets
      2m 27s
    2. Applying presets to multiple images
      3m 9s
    3. Preset resources
      4m 5s
  21. 10m 0s
    1. Quick raw processing of multiple files
      4m 38s
    2. Recording an action
      3m 15s
    3. Batch processing multiple images
      2m 7s
  22. 13m 52s
    1. Creative vivid color
      3m 30s
    2. Working with split toning
      2m 14s
    3. Applying soft and warm colors
      1m 25s
    4. Adding warm, muted colors
      2m 28s
    5. Adding and reducing false color
      4m 15s
  23. 7m 58s
    1. Additional resources
      3m 11s
    2. Camera Raw and Lightroom
      4m 19s
    3. Goodbye
      28s

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