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Undoing and the History panel

From: Photoshop CS4 Essential Training

Video: Undoing and the History panel

In the old days you didn't get very many chances to undo a mistake in Photoshop. Things have changed, and now there are some great features that will help you to move back in time or even forward in time to fix your mistakes. One of those is the Multiple Undo command. I'm going to come in and select my Brush tool here and just make a few random strokes on the image. Now, obviously I don't want to keep those. So to get rid of them, I'm going to go to the Edit menu at the top of the screen and choose Undo, and it even tells you what the command is that you are going to undo.

Undoing and the History panel

In the old days you didn't get very many chances to undo a mistake in Photoshop. Things have changed, and now there are some great features that will help you to move back in time or even forward in time to fix your mistakes. One of those is the Multiple Undo command. I'm going to come in and select my Brush tool here and just make a few random strokes on the image. Now, obviously I don't want to keep those. So to get rid of them, I'm going to go to the Edit menu at the top of the screen and choose Undo, and it even tells you what the command is that you are going to undo.

And you can see to the right of that command the shortcut for Undo, which is Command+Z on a Mac or Ctrl+Z on a PC. So I'll actually use the shortcut. I'm pressing Command+Z and then I'll press Command+Z again, and it will toggle that second line back on. So with Command+Z, you can undo and then the second time around, redo. Now, what if you wanted to step backward and take away both of these strokes? Then you would press Command+Z, and for the second stroke to go back even further, hold down the Option key on a Mac, or the Alt key on a PC, and Command+Z again.

The Undo commands are useful, but if you're undoing very far back in time, it can be a bit confusing as to exactly where you are. So I'd like to use the History panel instead. This is the History panel over here on the right. I opened it from the Window menu here, and then I docked it into this column of panels. The History panel keeps a running list of all the actions that you take in image. So for example, I'm going to go over to the toolbox again and I'm going to select from underneath the Dodge tool here, the Sponge tool. Then I'm going to go to the tool Options Bar and I'm going to tell the Sponge tool to Saturate rather than Desaturate, so that I can use the tool to increase the color intensity of a small area of this photo.

Then I am going to come into the photo and click-and-drag a few times and every time I release my mouse in the History panel you see another state. Each one of these is a stroke with the Sponge tool. Now I'll do something else. I am going to get my Eyedropper tool in the toolbox. I'm going to use it to select a color, this gold color around the GG sign on the post, and then I am going to get my Paintbrush tool, I'll move into the image and I'll make my tool bigger by pressing the Right Bracket key.

I'll give myself a preview of where this is going to paint by holding down the Ctrl key and the Option key, that's right-click and the Alt key on a PC, then I'll drag to see where I'm going to paint. Now, what I wanted to show you is that none of that showed up here in the History panel, because I wasn't actually taking actions on the photo. I was just getting things set up. But now if I come in and I start clicking on that area of the photo to fill it in with the color in the foreground color box, each click is a separate state here in the History panel.

The beauty of the History panel is that I can now go back in time and click on any state to return the photo to its appearance at that time. So if I want to go back before I was making any of these gold brush marks, I would come back just before the first Brush tool state, click on the Sponge tool state there, and in my image I lose all my brush marks. Not only that. If I change my mind again, I can walk forward and bring any of those Brush tool marks back. Now let's say I go back, click on the last Sponge tool state again to get rid of my brush marks, and I am going to do something else now.

I'm going to come in and from behind the Saturate tool, I'm going to choose the Burn tool. The purpose of the Burn tool is to help you burn in, or make darker small areas of an image. So let's say I wanted to make these clouds darker up here. I could come in with this Burn tool and drag, and notice in the History panel, each time I drag I get another state with the Burn tool, but, and here is the point to take home, all of the strokes that I've made with the regular Brush tool are now gone forever, because once you back up and start down another path, you change the linear history in the History panel.

The other nice thing about the History panel is that you can always go back to square one, because at the very top of the panel, there is a snapshot of the way your image looked at the beginning when you first opened it. Sometimes I'll use this to compare the way my photo was at the beginning to the way it is at the end. So if click there, I can see the original photo, and then if I go back to my very last state, I can see the photo with the changes I've added. And if I like the way the photo is right now, I can take a snapshot of it by going to the Camera symbol at the bottom of the History panel, clicking, and there is my snapshot.

So I might double-click on the word Snapshot to give this a meaningful name. I'll name it saturated and burned. So that's how you can use the History panel to preserve your image at any state in time and to move back and forward in time to give you the flexibility you need when you're editing your photos in Photoshop CS4.

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This video is part of

Image for Photoshop CS4 Essential Training
Photoshop CS4 Essential Training

103 video lessons · 67350 viewers

Jan Kabili
Author

 
Expand all | Collapse all
  1. 2m 31s
    1. Welcome
      1m 27s
    2. Using the example files
      1m 4s
  2. 25m 14s
    1. Touring the interface
      4m 25s
    2. Working with tabbed documents
      5m 15s
    3. Using tools efficiently
      3m 51s
    4. Arranging panels
      3m 53s
    5. Customizing keyboard shortcuts
      2m 50s
    6. Saving a custom workspace
      3m 0s
    7. Changing screen modes
      2m 0s
  3. 19m 3s
    1. Touring the Bridge interface
      6m 31s
    2. Opening images from Bridge
      1m 20s
    3. Reviewing images
      4m 42s
    4. Finding images
      6m 30s
  4. 44m 53s
    1. Setting preferences
      4m 23s
    2. Choosing color settings
      8m 11s
    3. Zooming and panning
      5m 27s
    4. Resizing and image resolution
      3m 17s
    5. Adding to the canvas
      2m 2s
    6. Rotating the canvas
      1m 44s
    7. Choosing color
      4m 49s
    8. Sizing a brush tip
      3m 4s
    9. Undoing and the History panel
      5m 0s
    10. Saving and file formats
      3m 29s
    11. Creating a file from scratch
      3m 27s
  5. 37m 58s
    1. Making geometric selections
      6m 14s
    2. Modifying selections
      4m 43s
    3. Combining selections
      3m 16s
    4. Using the Quick Selection tool
      5m 34s
    5. Refining selection edges
      4m 12s
    6. Using Quick Mask mode
      2m 18s
    7. Selecting with the improved Color Range command
      4m 32s
    8. Selecting with the Magnetic Lasso tool
      2m 28s
    9. Using the Background Eraser tool
      3m 7s
    10. Saving selections
      1m 34s
  6. 39m 56s
    1. Understanding layers
      5m 43s
    2. Creating layers
      5m 12s
    3. Working in the Layers panel
      2m 19s
    4. Locking layers
      4m 17s
    5. Working with multiple layers
      4m 6s
    6. Merging and flattening layers
      3m 55s
    7. Adding a shape layer
      4m 43s
    8. Basic layer masking
      4m 23s
    9. Using layer blend modes and opacity
      5m 18s
  7. 23m 19s
    1. Cropping
      3m 26s
    2. Straightening
      3m 17s
    3. Transforming
      4m 42s
    4. Working with Smart Objects
      6m 48s
    5. Using Content-Aware Scaling
      5m 6s
  8. 1h 10m
    1. Reading histograms
      4m 21s
    2. Using adjustment layers and the Adjustment panel
      6m 4s
    3. Adjusting tones with Levels
      7m 49s
    4. Limiting adjustments with layer masks
      5m 40s
    5. Using masks in the new Masks panel
      6m 9s
    6. Limiting adjustments by clipping
      3m 6s
    7. Adjusting with Shadow/Highlight
      5m 7s
    8. Adjusting with Curves
      7m 37s
    9. Adjusting with Hue/Saturation
      3m 42s
    10. Adjusting with Vibrance
      2m 16s
    11. Removing a color cast
      4m 26s
    12. Using the Black & White adjustment layer
      2m 39s
    13. Using the Dodge Burn and Sponge tools
      4m 11s
    14. Reducing noise
      2m 39s
    15. Sharpening
      4m 42s
  9. 38m 0s
    1. Using the Spot Healing Brush tool
      5m 17s
    2. Using the Healing Brush tool
      5m 51s
    3. Using the Patch tool
      4m 52s
    4. Using the Clone Stamp tool
      4m 8s
    5. Enhancing eyes
      9m 29s
    6. Changing facial structure
      5m 0s
    7. Softening skin
      3m 23s
  10. 44m 38s
    1. What's a raw image?
      4m 25s
    2. Touring the Camera Raw interface
      7m 35s
    3. Working in the Basic panel
      7m 54s
    4. Working in the Tone Curve panel
      2m 21s
    5. Working in the HSL/Grayscale and Split Toning panels
      3m 46s
    6. Looking at the other Camera Raw panels
      3m 45s
    7. Using the Adjustment Brush tool
      4m 2s
    8. Using the Graduated Filter tool
      3m 56s
    9. Working with multiple files
      6m 54s
  11. 21m 6s
    1. Using the Brushes panel
      8m 30s
    2. Filling with color
      3m 49s
    3. Replacing color
      4m 14s
    4. Using gradients
      4m 33s
  12. 16m 55s
    1. Working with point type
      9m 59s
    2. Working with paragraph type
      3m 17s
    3. Warping text
      3m 39s
  13. 25m 23s
    1. Adding a layer style
      4m 6s
    2. Customizing a layer style
      3m 35s
    3. Copying a layer style
      3m 5s
    4. Creating a new style
      3m 32s
    5. Using Smart Filters
      5m 22s
    6. Working in the Filter Gallery
      5m 43s
  14. 13m 14s
    1. Auto-blending focus
      4m 47s
    2. Creating Photomerge panoramas
      4m 2s
    3. Combining group photos
      4m 25s
  15. 23m 27s
    1. Creating an action
      7m 16s
    2. Batch processing with an action
      6m 36s
    3. Using the Image Processor
      9m 35s
  16. 29m 20s
    1. Printing
      11m 32s
    2. Making a contact sheet from Bridge
      6m 12s
    3. Creating a web gallery from Bridge
      7m 17s
    4. Preparing photos for the web
      4m 19s
  17. 30s
    1. Goodbye
      30s

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