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Photoshop CS5 One-on-One: Advanced

Adjusting Angle and Altitude


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Photoshop CS5 One-on-One: Advanced

with Deke McClelland

Video: Adjusting Angle and Altitude

In this exercise, I explain how to use the Angle and Altitude values, which allow you to define the location of the light source in the sky. We'll also touch on this Use Global Light check box, which becomes very important when you're adjusting directional effects. By directional effects, I mean the big three, which are Drop Shadow - and notice I press Ctrl+1 or Cmd+1 to switch to Drop Shadow incidentally. Notice that there is an Angle value. It's dimmed, because the Drop Shadow is not currently turned on. We also have a Use Global Light setting.
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  1. 40m 2s
    1. Welcome
      2m 1s
    2. Making Photoshop your default image editor
      7m 43s
    3. Installing the dekeKeys keyboard shortcuts
      8m 10s
    4. Remapping OS shortcuts
      7m 37s
    5. Installing the Best Workflow color settings
      4m 31s
    6. The color settings explained
      6m 54s
    7. Loading the CS5 color settings in Bridge
      3m 6s
  2. 1h 5m
    1. What you can do with Photoshop
      1m 46s
    2. The mission-critical eyes
      2m 44s
    3. Copy Merged and Paste in Place
      6m 52s
    4. Sharpening details to match
      4m 34s
    5. Masking eyes
      9m 22s
    6. Working with clipping-mask layers
      9m 5s
    7. Shading with layer effects
      8m 10s
    8. Color and highlight effects
      4m 2s
    9. Refining layer masks
      5m 43s
    10. Fabricating the highlights in the pupils
      7m 33s
    11. Using a merged copy to sharpen
      5m 34s
  3. 2h 14m
    1. Highlights, shadows, and midtones
      1m 16s
    2. Introducing the Auto commands
      7m 23s
    3. Adjusting Cache Level settings
      6m 8s
    4. Reading a channel-by-channel histogram
      6m 21s
    5. How the Auto commands work
      5m 22s
    6. Auto Tone, Auto Contrast, and Auto Color
      7m 7s
    7. Blending the Auto results
      4m 4s
    8. Introducing the Levels command
      6m 15s
    9. Using Levels as an adjustment layer
      3m 12s
    10. Applying custom Levels adjustments
      6m 8s
    11. Understanding the gamma value
      7m 39s
    12. The futility of Output Levels
      2m 56s
    13. Selections and adjustment layers
      5m 48s
    14. Opening up the shadows
      3m 40s
    15. Previewing clipped pixels
      4m 51s
    16. The black, white, and gray eyedroppers
      5m 7s
    17. Gray card tips and tricks
      6m 5s
    18. Making channel-by-channel adjustments
      7m 29s
    19. Introducing the Curves command
      7m 44s
    20. Curves dialog box tricks
      7m 16s
    21. Curves adjustment layer tricks
      5m 45s
    22. Correcting an image with Curves
      5m 32s
    23. Filling in the highlights
      5m 42s
    24. Neutralizing casts and smoothing transitions
      5m 37s
  4. 1h 46m
    1. The art of enhancing edges
      1m 26s
    2. How sharpening works
      6m 2s
    3. The single-shot sharpeners
      6m 7s
    4. Introducing Unsharp Mask
      6m 19s
    5. Radius and Threshold
      6m 24s
    6. Sharpening colors vs. luminosity
      5m 56s
    7. Gauging the ideal settings
      8m 59s
    8. Unsharp Mask vs. Smart Sharpen
      7m 1s
    9. Using the Remove settings
      9m 30s
    10. The More Accurate checkbox
      6m 8s
    11. Saving your Smart Filter settings
      5m 31s
    12. The Advanced sharpening settings
      7m 52s
    13. Accounting for camera shake
      6m 18s
    14. Sharpening with the Emboss filter
      6m 43s
    15. Sharpening with High Pass
      9m 23s
    16. The new and improved Sharpen tool
      6m 22s
  5. 1h 34m
    1. Edge's evil twin: noise
      1m 12s
    2. Color vs. luminance noise
      7m 21s
    3. Reducing color noise
      7m 45s
    4. Reducing luminance noise
      4m 59s
    5. Relegating an effect to the shadows
      6m 27s
    6. Switching between layer and mask
      6m 59s
    7. The Dust & Scratches filter
      4m 56s
    8. Adjusting shadow saturation
      5m 52s
    9. Combining High Pass with Lens Blur
      6m 57s
    10. Masking a layer of Lens Blur
      7m 34s
    11. Painting away High Pass sharpening
      8m 22s
    12. Building up a noise pattern
      6m 40s
    13. Converting noise to texture
      4m 24s
    14. Bleeding colors into paper
      6m 16s
    15. Matching different noise levels
      8m 31s
  6. 1h 32m
    1. We are the stuff of light
      1m 24s
    2. Applying automatic lens correction
      5m 53s
    3. Introducing Shadows/Highlights
      3m 44s
    4. Shadows/Highlights in depth
      7m 59s
    5. Creating a "bounce" with Gaussian Blur
      4m 43s
    6. Sharpening on top of blur
      7m 3s
    7. Sharpening the merged composition
      6m 16s
    8. Grouping and masking layers
      5m 40s
    9. Adjusting the density of a mask
      7m 14s
    10. Creating a Shadows/Highlights shortcut
      5m 47s
    11. Restoring detail with Shadows/Highlights
      6m 23s
    12. Changing the Shadows/Highlights defaults
      6m 21s
    13. Smoothing skin details with Gaussian Blur
      3m 56s
    14. Smoothing with High Pass
      5m 44s
    15. Lowering contrast with Gaussian Blur
      7m 4s
    16. Inverting a sharpening effect
      7m 5s
  7. 2h 32m
    1. Color becomes monochrome
      1m 31s
    2. Converting an image to grayscale
      6m 49s
    3. Extracting luminance information
      7m 37s
    4. Introducing the Channel Mixer
      10m 23s
    5. Aggressive channel mixing
      9m 42s
    6. Proofing CMYK colors
      7m 49s
    7. Color settings and intent
      7m 6s
    8. Practical Channel Mixer variations
      4m 30s
    9. Saving variations as layer comps
      7m 57s
    10. The default grayscale recipe
      8m 55s
    11. Creating a custom black-and-white mix
      6m 59s
    12. Shadows/Highlights in black and white
      4m 58s
    13. Introducing the Black & White command
      5m 55s
    14. Adjusting Black & White settings
      9m 39s
    15. Mixing a Black & White portrait
      6m 32s
    16. Black & White vs. Channel Mixer
      9m 21s
    17. Adding tint and color
      8m 0s
    18. Introducing the Gradient Map
      7m 10s
    19. Loading custom gradients
      4m 32s
    20. Editing gradient color stops
      9m 58s
    21. Colorizing with blend modes and Opacity
      7m 13s
  8. 2h 10m
    1. Two great commands working great together
      1m 18s
    2. Introducing the Color Range command
      5m 13s
    3. Setting key colors and Fuzziness
      5m 38s
    4. Predefined vs. sampled colors
      3m 57s
    5. The Localized Color Clusters option
      5m 41s
    6. Defining a selection with care
      4m 44s
    7. Introducing the Quick Mask mode
      5m 20s
    8. Testing edges with the Magic Wand
      5m 14s
    9. Hand-brushing a selection
      5m 39s
    10. Saving and loading an alpha channel
      4m 35s
    11. Converting a selection to a layer mask
      2m 46s
    12. Switching between an image and a layer mask
      6m 58s
    13. Protecting elements with a layer mask
      8m 5s
    14. Duplicating and editing a layer mask
      7m 34s
    15. Introducing the Refine Edge command
      4m 46s
    16. Accessing the various Refine Edge options
      5m 35s
    17. Refine Edge's preview options
      6m 21s
    18. The Adjust Edge values
      4m 11s
    19. Edge Detection and Smart Radius
      6m 5s
    20. Using the Refine Radius tool
      8m 8s
    21. Using the Decontaminate Colors option
      7m 30s
    22. Old-school masking adjustments
      7m 7s
    23. Four micro mask adjustments
      8m 33s
  9. 3h 13m
    1. Photoshop's vector exceptions
      1m 11s
    2. Making text in Photoshop
      6m 18s
    3. Creating and editing a text layer
      6m 56s
    4. Font and type style
      7m 35s
    5. Type size and color
      7m 52s
    6. Combining layer effects and type
      10m 57s
    7. Drawing a custom shape layer
      8m 34s
    8. Side bearing, kerning, and tracking
      10m 36s
    9. Point text vs. area text
      8m 26s
    10. Selecting and formatting a paragraph
      5m 19s
    11. Copying and pasting unformatted text
      7m 45s
    12. Creating text inside a custom path
      6m 26s
    13. Creating text along a path
      8m 13s
    14. Adjusting baseline shift
      6m 16s
    15. Drawing a fading arrowhead
      7m 29s
    16. Fading a shadow with a layer
      5m 32s
    17. Logo creation and Fill Opacity
      7m 44s
    18. Stretching a background element
      6m 9s
    19. Drawing with shape outlines
      6m 18s
    20. Combining vector-based shapes
      6m 42s
    21. Masking vector-based shape layers
      6m 7s
    22. Correcting spacing problems
      7m 44s
    23. Drawing the ultimate specular sparkle
      8m 45s
    24. Preparing text for commercial output
      5m 9s
    25. Saving a high-resolution PDF file
      7m 11s
    26. Inspecting the final PDF document
      7m 8s
    27. Saving large poster art
      9m 32s
  10. 2h 36m
    1. What filters ought to be
      1m 25s
    2. Layer effects vs. filters
      6m 14s
    3. Carving with an Inner Shadow effect
      7m 45s
    4. Selling an effect with Drop Shadow
      7m 17s
    5. Creating blurry shadow type
      5m 30s
    6. Saving custom default settings
      6m 22s
    7. Creating a custom contour
      7m 3s
    8. Introducing Bevel and Emboss
      7m 35s
    9. Adjusting Angle and Altitude
      7m 8s
    10. Exploiting global light
      8m 11s
    11. Gloss and edge contour
      5m 8s
    12. Applying and creating layer styles
      6m 45s
    13. Loading, saving, and merging styles
      6m 17s
    14. Creating a textured bevel effect
      6m 56s
    15. Using shadows as highlights
      7m 39s
    16. Combining filters and effects
      6m 58s
    17. Working with random effects
      6m 55s
    18. Smoothing with Gaussian Blur and Levels
      6m 13s
    19. Masking blacks from whites
      4m 37s
    20. Applying liquid styles
      4m 36s
    21. Simulating liquid reflections
      8m 12s
    22. Finessing and cropping a liquid effect
      7m 25s
    23. Initiating a displacement map
      6m 17s
    24. Applying a displacement map
      7m 37s
  11. 1h 12m
    1. Two words: Free Transform
      34s
    2. Scale, rotate, and constrain
      6m 30s
    3. Using the transformation origin
      7m 42s
    4. Applying a slant (aka skew)
      3m 37s
    5. The four-point "perspective" distortion
      7m 51s
    6. Two ways to make gradient text
      5m 59s
    7. Building complexity from a simple shape
      4m 42s
    8. Duplicating a series of transformations
      6m 3s
    9. Rasterizing a layer with its effects
      6m 41s
    10. Applying a custom warp
      7m 24s
    11. Blending and softening a warped layer
      4m 39s
    12. Creating spherical highlights
      6m 30s
    13. Using a center-source inner glow
      3m 51s
  12. 2h 42m
    1. Distorting reality
      1m 33s
    2. Extracting a foreground element
      6m 45s
    3. Introducing the Puppet Warp command
      7m 20s
    4. Setting and manipulating pins
      7m 48s
    5. Rotating pins and switching warp modes
      6m 41s
    6. Expanding and contracting the mesh
      6m 11s
    7. Changing the Density setting
      8m 0s
    8. Adjusting the pin depth
      5m 18s
    9. Winding an image into a pretzel
      6m 2s
    10. Applying Puppet Warp to type
      6m 30s
    11. Warping single characters
      6m 25s
    12. Editing puppet-warped text
      8m 24s
    13. Extending an image with Free Transform
      8m 46s
    14. Extracting from a white background
      10m 5s
    15. Tracing a shape with Puppet Warp
      9m 1s
    16. Introducing the Liquify command
      5m 4s
    17. Warp, Twirl, Pucker, and Bloat
      8m 53s
    18. Saving and loading a mesh
      5m 59s
    19. Push, Mirror, and Turbulence
      11m 49s
    20. Lifting and slimming details
      8m 22s
    21. Warping fabric, arms, and legs
      7m 1s
    22. Masking and finessing the results
      10m 8s
  13. 3h 3m
    1. Welcome to the digital darkroom
      1m 44s
    2. Introducing Camera Raw
      7m 40s
    3. Adjusting white balance
      7m 0s
    4. Selecting and synchronizing images
      6m 9s
    5. Making automatic adjustments and saving changes
      7m 19s
    6. Creating and managing snapshots
      8m 23s
    7. Adjusting the Exposure value
      6m 24s
    8. Working with clipping warnings
      5m 5s
    9. Adjusting Brightness and Contrast
      7m 35s
    10. Vibrance, Saturation, and Clarity
      9m 25s
    11. Recovery and Fill Light
      6m 57s
    12. Using the Graduated Filter tool
      7m 2s
    13. Painting edits with the Adjustment Brush
      9m 44s
    14. Straighten, crop, and geometric distortions
      7m 49s
    15. Applying manual lens corrections
      7m 19s
    16. Vignette and chromatic aberrations
      6m 21s
    17. Introducing the Tone Curves
      6m 9s
    18. Parametric curves and targeted adjustments
      6m 26s
    19. Correcting a low-noise photograph
      7m 35s
    20. Sharpening and high-noise photos
      8m 25s
    21. Selective Hue/Saturation adjustments
      5m 34s
    22. Selective Luminance adjustments
      5m 39s
    23. Adding grain and vignetting effects
      5m 23s
    24. Mixing a subjective black-and-white image
      7m 53s
    25. Colorizing with the Split Toning options
      4m 29s
    26. Opening a raw image as a Smart Object
      5m 39s
    27. Camera Raw wrap-up
      8m 38s
  14. 55s
    1. Until next time
      55s

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Photoshop CS5 One-on-One: Advanced
26h 24m Intermediate Aug 13, 2010 Updated Aug 31, 2010

Viewers: in countries Watching now:

Photoshop CS5 One-on-One: Advanced, the second part of the popular and comprehensive series, updated for CS5, follows internationally renowned Photoshop guru Deke McClelland as he dives into the workings of Photoshop. He explores such digital-age wonders as the Levels and Curves commands, edge-detection filters, advanced compositing techniques, vector-based text, the Liquify filter, and Camera Raw. Deke also teaches tried-and-true methods for sharpening details, smoothing over wrinkles and imperfections, and enhancing colors without harming the original image. Exercise files accompany the course.

Recommended prerequisite: Photoshop CS5 One-on-One: Fundamentals.

Topics include:
  • Using blend modes, adjustment layers, and layer styles
  • Organizing a layered composition so it is fluid and editable
  • Creating and editing type in Photoshop
  • Using blur effectively
  • Using adjustment layers to add color
  • Combining layers into a clipping mask
  • Working with Camera Raw
Subjects:
Design Photography
Software:
Photoshop
Author:
Deke McClelland

Adjusting Angle and Altitude

In this exercise, I explain how to use the Angle and Altitude values, which allow you to define the location of the light source in the sky. We'll also touch on this Use Global Light check box, which becomes very important when you're adjusting directional effects. By directional effects, I mean the big three, which are Drop Shadow - and notice I press Ctrl+1 or Cmd+1 to switch to Drop Shadow incidentally. Notice that there is an Angle value. It's dimmed, because the Drop Shadow is not currently turned on. We also have a Use Global Light setting.

So Angle and Use Global Light exist for Drop Shadow. They also exist for Inner Shadow, which I selected by pressing Ctrl+2 or Cmd+2 on the Mac. The reason I'm working from the keyboard, by the way, is so I don't end up turning these check boxes on. I don't want to do that at this point. I'll press Ctrl+5 or Cmd+5 on the Mac to switch to Bevel and Emboss. Not only do you have Angle and Use Global Light, but you also have Altitude. So what's going on here? Well, Angle is the angle of the sunlight, or it could be, you know, a light bulb, any light source, doesn't matter.

Because the sun is up and to the left, as defined by the Angle value, which is 135 degrees. So if we looked at one or the others, like Ctrl+1 or Cmd+1 for Drop Shadow. You can see that the Angle is up and to the left. So it's the exact same at 135 degrees across the board right now. So if I switch back to Bevel and Emboss, what that means is the near edge, because we're lighting a frame here, the near edge is going to catch the shadow, and the far edge is going to catch the highlight. If I was to rotate the sun like so, then the near edge would be down and to the left along with the light source.

The far edge, which is catching the highlight, is up and to the right, and so on. So you can just go ahead and drag that Angle value around, wherever you want it to be. I'm going to go ahead and reset it to 135 degrees. Now, what in the world is going on with Altitude? Altitude is the location of the sun in the sky. So in other words, if the Altitude value is down here at 1 degree, let's say. I'll press the Tab key to accept that for a moment. That means that the sun is right there on the horizon line.

It's just coming up in the morning, or going down in night, or whatever in the world it's doing. It doesn't matter what direction it's traveling; it's just right there at the horizon. As a result where this frame effect is concerned, we're getting a very dark shadow on the inside edge, because the light isn't catching that edge at all. We're getting a fairly bright highlight over here on the far edge. If I start raising that Altitude value, I'm raising the sun in the sky. So the sun is coming up.

As a result, it's swinging around, and it's starting to catch some of the shadow edge. So the Shadow edge is brightening up. The Highlight edge might alternately catch a little additional light or a little less light as you raise that value. By the way, you may also end up casting some light onto the surface of your layer. So that's something to keep an eye out for. I'm going to keep raising that Altitude value. It's right between 50-60 degrees that you really start seeing a difference. So instead of pressing Shift+Up Arrow, which is what I've been doing so far, I'm going to press the Up Arrow key to just incrementally raise that value.

You can see that the inside edge, the Shadow edge is getting more and more light, and the Highlight edge is just fading away, as it has now. We're up to an Altitude value of 72 degrees. So it's about 1 O' clock in the afternoon, if you will. The sun is almost directly overhead. For it to be directly overhead, that value would have to be 90 degrees. Now an Altitude of 90 degrees in our case is going to give us two Shadow edges, because basically, we're lighting this surface directly here, and the surface of the frame as well.

Then the edges are just losing a tiny bit of light and nothing more. You're not going to get much of an effect though at such a high Altitude value. Typically, you're going to want to keep this value some place between about 30 and 70 degrees. But there is a lot of flexibility inside of that range, a lot of different effects you can achieve. Now for this specific effect, I landed on an Altitude of 50 degrees. I should mention one more thing. We've got Direction Up or Down. If you click Down, then you're going to reverse the two edges, because now what you're saying is that the frame is going down.

We're actually sculpting the frame out from the wood. So the interior of the wood is high and so the highlight is appearing on the top left edge. That's the exposed surface to the light source. Then the shadow is now on the bottom right edge. Anyway, I'm going to go ahead, and Cancel out of all of this. You may notice that I skipped the Use Global Light check box. I will come back to it. I'm going to Cancel out of this dialog box here. Then I'll quickly turn on my other effects. Now because I'm creating a frame, I figured the frame ought not just to catch a shadow, but it also should cast a shadow.

So I added a Drop Shadow effect right there. Now it seems to me that we have a little more credible depth going on. Then I added this Gradient Overlay layer. Now all Gradient Overlay and all the Overlay layers, By the way, there is Color Overlay, there is Gradient Overlay, and there is Pattern Overlay. They allow you to assign either a solid color or a gradient, or a pattern on top of your layer. You can mix and match them as well. You can have a color and a gradient, and a pattern interacting with each other using different Blend modes.

Let me show you what's going on with the Gradient Overlay. I'll double-click on the effect to bring up the Gradient Overlay panel of the layer Style dialog box. I'll increase the Opacity value to 100%. I'll change the mode from Multiple to Normal. This is the kind of Gradient I'm applying right there. It's a black to white gradient, and you can see over here, the Angle value is -65 degrees. So it's heading from the upper-left portion of the image to the lower right at a slight incline. Now I didn't want that effect of course, so I started things off by reducing the Opacity value to 25%, which gives me a little bit of shading up at the top, and a little bit of brightening down at the bottom.

But the brightening, as you can see here is extremely washed out. That's not going to work for me. So if I want to integrate the gradient with the frame, I would either switch to the Overlay mode, if I want to keep both the Shadow and the Highlight. We would get this effect here, so you can see I have a rich shadow up left, and a very bright highlight down right as well, or I could just keep the Highlight using Screen or Linear Dodge, or I could just keep the Shadow using Multiply or Linear Burn. And that's what I wanted, was a Shadow. So I chose Multiply, and that burned in a fairly low saturation shadow up left.

Then I have neutrality down right. So in other words, the white portion of the gradient just drops away. That's what happens with Multiply. Multiply treats white as transparent. Screen, it's opposite there, treats black as transparent. Anyway, Multiply is the mode I selected. I'm going to go ahead and Cancel out of this dialog box, because that is my framing effect right there. I still have yet to explain what's going with Use Global Light, and you might surmise why, because I'm going to explain it in the next exercise.

Find answers to the most frequently asked questions about Photoshop CS5 One-on-One: Advanced.


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Q: The instructions for installing the dekeKeys don't work on my computer (which is running Mac OS X Lion). Is there an update to these?
A: The dekeKeys distributed with this course will still work for Lion. You just need to add them to a slightly different folder than in previous versions of OS X.

Open a new Finder window and choose Go > Go to Folder. Type the following file path exactly as written below. Copying and pasting may result in an error.

~/Library/Application Support/Adobe/Adobe Photoshop CS5/Presets/Keyboard Shortcuts

Move and/or copy/paste the dekeKeys to this folder and follow the rest of the instructions as outlined in the video, "Installing the dekeKeys keyboard shortcuts."
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