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Making channel-by-channel adjustments

From: Photoshop CC One-on-One: Intermediate

Video: Making channel-by-channel adjustments

In this movie, I'll show you how you can change the color balance of an image by applying levels on a channel by channel basis. So many of you will recognize this badly balanced version of my children here from chapter eight. I'm going to drop down to the black white icon, click on it, and choose the levels command. And notice that in addition to correcting the composite image, meaning all channels at the same time You can correct each one of the channels independently, and we have keyboard shortcuts to switch between them as well. Of Alt-2 through 5 here on the PC, that's option+2 through 5 on the Mac.

Making channel-by-channel adjustments

In this movie, I'll show you how you can change the color balance of an image by applying levels on a channel by channel basis. So many of you will recognize this badly balanced version of my children here from chapter eight. I'm going to drop down to the black white icon, click on it, and choose the levels command. And notice that in addition to correcting the composite image, meaning all channels at the same time You can correct each one of the channels independently, and we have keyboard shortcuts to switch between them as well. Of Alt-2 through 5 here on the PC, that's option+2 through 5 on the Mac.

And so for example, if I thought there was too much red in this image, I could switch to the red channel, and I could go ahead and drag that gamma triangle to the right. Then if I feel like I've got too much green then I could switch to the green channel and drag it's grey triangle as well. Thing is that's kind of a pain in the neck to have to switch between channels and just make guesses about what it is you're supposed to do. Which is why Photoshop includes these little eyedroppers here. For example, if you sleect the black triangle and click on a dark detail, it'll clip that detail to black on a channel by channel basis.

So you're making channel by channel modifications. So you can see here in the green channel, the black point value switched 20. Whereas in the blue channel, it switched to 17. You can do the opposite with the white eye dropper. For example I can click here on the pillow, if I wanted to clip the heck out of my colors, and you can see that the white point value is now 174, in the blue channel, whereas say in the red channel, it's 220. I'm not very fond of those two tools, I have to admit. I never use them. Except for illustration work, so they're not really very useful for correcting photographs.

However, this gray eyedropper, we'll go ahead and change to gamma value on a channel by channel basis. For example, if I think the walls should be neutral. I could click on it, and now we can see the gamma value in the red channel is 0.72, whereas in the green channel, it's 0.98. And where that grey eyedropper becomes helpful is if you have something on the order of a grey card in the photograph. So if I had included a grey card along with this photo, I can just click on it, and that will go ahead and neutralize the grey and correct the color cast.

The thing is, of course, this photograph does not include a grey card, but I can show you how to fake one in the very next movie.

Show transcript

This video is part of

Image for Photoshop CC One-on-One: Intermediate
Photoshop CC One-on-One: Intermediate

123 video lessons · 10296 viewers

Deke McClelland
Author

 
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  1. 2m 4s
    1. Welcome to One-on-One
      2m 4s
  2. 1h 1m
    1. The best of Photoshop automation
      35s
    2. Content-Aware Fill and Color Adaptation (CC 2014) NEW
      7m 44s
    3. Combining two layers with a layer mask (CC 2014) NEW
      5m 37s
    4. Content-aware healing (CC 2014) NEW
      10m 17s
    5. Introducing the Patch tool
      3m 43s
    6. Using Content-Aware Patch UPDATED
      7m 17s
    7. Retouching with Content-Aware Patch UPDATED
      3m 45s
    8. Using the Content-Aware Move tool UPDATED
      7m 41s
    9. Using Content-Aware Extend
      2m 4s
    10. The Content-Aware Scale command
      6m 35s
    11. Scaling in multiple passes
      2m 22s
    12. Protecting skin tones
      3m 31s
  3. 32m 55s
    1. Editing the histogram
      1m 50s
    2. The new automatic Levels adjustment
      4m 33s
    3. Customizing a Levels adjustment
      4m 53s
    4. Understanding the Gamma value
      2m 7s
    5. Opening up the shadows
      2m 48s
    6. Previewing clipped pixels
      3m 40s
    7. Retouching with Output Levels
      4m 25s
    8. Making channel-by-channel adjustments
      2m 19s
    9. Faking a gray card in post
      2m 51s
    10. Assigning shortcuts to adjustment layers
      3m 29s
  4. 57m 43s
    1. How sharpening works
      1m 38s
    2. Introducing the Smart Sharpen filter
      6m 56s
    3. Understanding the Radius value
      5m 20s
    4. Gauging the best sharpening settings
      5m 45s
    5. Addressing color artifacts and clipping
      5m 49s
    6. The Remove and Reduce Noise options
      4m 22s
    7. The Shadows/Highlights options
      7m 36s
    8. Correcting for camera shake
      6m 47s
    9. Sharpening with the Emboss filter
      5m 45s
    10. Sharpening with the High Pass filter
      4m 44s
    11. Painting in sharpness
      3m 1s
  5. 1h 12m
    1. Vector-based type
      1m 35s
    2. Creating and editing point text UPDATED
      8m 8s
    3. Font and type style tricks UPDATED
      7m 58s
    4. Type size and color tricks UPDATED
      6m 42s
    5. Kerning and tracking characters UPDATED
      8m 9s
    6. Creating and editing area text UPDATED
      3m 50s
    7. Selecting and formatting paragraphs UPDATED
      6m 50s
    8. Setting text inside a custom path UPDATED
      5m 34s
    9. Creating text along a path
      6m 12s
    10. Adjusting baseline shift
      4m 45s
    11. Creating and stylizing a logo
      6m 49s
    12. Masking text into image elements UPDATED
      6m 14s
  6. 1h 9m
    1. The other vector-based layer
      1m 39s
    2. Dotted borders and corner roundness
      8m 14s
    3. Drawing and aligning custom shapes
      3m 55s
    4. Creating your own repeatable custom shape
      5m 43s
    5. Selecting and modifying path outlines (CC 2014) NEW
      6m 5s
    6. Isolating selected layers (CC 2014) NEW
      6m 39s
    7. Combining simple shapes to make complex ones UPDATED
      6m 31s
    8. Cropping, adjusting, and merging shapes UPDATED
      8m 49s
    9. Creating a soft, synthetic sparkle
      6m 22s
    10. Saving a resolution-independent PDF file
      6m 42s
    11. Turning a small image into a huge one
      8m 38s
  7. 1h 14m
    1. Depth, contour, and texture
      1m 28s
    2. Imparting depth with a layer effect
      9m 9s
    3. The power of the drop shadow
      7m 37s
    4. Modifying a layer and its effects
      6m 21s
    5. Saving custom default settings
      4m 12s
    6. Creating a custom contour
      8m 5s
    7. Introducing Bevel and Emboss
      8m 8s
    8. Multiple effects and multiple layers
      7m 45s
    9. Global Light and rasterizing effects
      8m 5s
    10. Gloss and surface contour
      6m 4s
    11. Adding texture to Bevel and Emboss
      7m 21s
  8. 34m 48s
    1. Styles store settings
      1m 38s
    2. Creating and applying a paragraph style
      3m 41s
    3. Redefining a style and styling a word
      5m 38s
    4. Creating and styling a placeholder style
      5m 43s
    5. Applying and creating layer styles
      5m 45s
    6. Loading and customizing layer styles
      5m 42s
    7. Merging and saving layer styles
      6m 41s
  9. 56m 48s
    1. Meet the transformations
      1m 55s
    2. Transformations and Smart Objects
      5m 46s
    3. Adjusting the interpolation setting
      5m 10s
    4. Rotating a layer with Free Transform
      5m 22s
    5. Scale, duplicate, and repeat
      4m 30s
    6. Creating a synthetic star field
      5m 20s
    7. Warping a logo with Arc and Flag
      5m 34s
    8. Distort, perspective, and skew
      4m 15s
    9. Using transformations to draw and correct
      7m 0s
    10. Bolstering text with layer effects
      5m 43s
    11. Adding highlights with Lens Flare
      6m 13s
  10. 43m 36s
    1. Removing the weight that the camera adds
      1m 7s
    2. The Warp and Reconstruct tools
      6m 44s
    3. Brush size, hardness, and opacity
      4m 29s
    4. The Pucker, Bloat, Push, and Twirl tools
      7m 12s
    5. Saving and reapplying Liquify settings
      4m 9s
    6. Lifting and slimming details
      9m 42s
    7. Warping legs, arms, and fabric
      5m 33s
    8. Improving a model's posture
      4m 40s
  11. 58m 46s
    1. Shoot in color, convert to black and white
      1m 55s
    2. Three ways to grayscale
      5m 36s
    3. Mixing a custom black-and-white image
      7m 31s
    4. Simulating an infrared photograph
      6m 39s
    5. Creating a sienna-infused sepia tone
      5m 38s
    6. Creating a hyper-saturated image
      5m 26s
    7. Introducing the Black & White command
      3m 16s
    8. Customizing the Black & White settings
      4m 50s
    9. Black & White meets the Channel Mixer UPDATED
      7m 29s
    10. Infusing an image with tint and color
      5m 9s
    11. Grayscale and Split Tone in Camera Raw
      5m 17s
  12. 41m 34s
    1. The many ways to print
      1m 41s
    2. Using the test document UPDATED
      3m 18s
    3. Print, position, and size
      5m 57s
    4. Description and printing marks
      3m 3s
    5. Establishing a bleed
      3m 44s
    6. Getting reliable color
      5m 54s
    7. Special printing options
      5m 1s
    8. Previewing an image at print size
      4m 16s
    9. Creating contact sheets
      4m 49s
    10. Creating a multipage PDF
      3m 51s
  13. 31m 9s
    1. Making Internet imagery
      1m 6s
    2. Introducing Save for Web UPDATED
      4m 39s
    3. Creating the perfect JPEG image
      5m 14s
    4. Creating a high-contrast GIF image
      6m 23s
    5. The two varieties of PNG
      3m 57s
    6. Downsampling for the web
      5m 59s
    7. Adding copyright and contact info
      3m 51s
  14. 1m 3s
    1. Until next time
      1m 3s

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