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Photoshop CS6 One-on-One: Fundamentals

Straightening a crooked image


From:

Photoshop CS6 One-on-One: Fundamentals

with Deke McClelland

Video: Straightening a crooked image

The Crop tool also includes a Straighten tool that's available from the Options Bar which allows you to drag along the horizon to straighten a crooked image. I have opened a file called Protector of Pisa.jpg, found inside the 06_Crop folder. Now it appears to me whoever last edited this photo had problems choosing between the horizon line and the Tower of Pisa because neither of them are plumb. Of course, we want the horizon to be perpendicular and the tower to lean. So I'm going to switch over to the Crop tool. And notice dead center in the Options Bar, we have the Straighten tool.
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  1. 19m 15s
    1. Welcome to One-on-One
      2m 27s
    2. Opening from the Windows desktop
      4m 7s
    3. Opening from the Macintosh Finder
      4m 9s
    4. Opening from Photoshop or Bridge
      2m 45s
    5. Opening an image from Mini Bridge
      1m 16s
    6. Opening through Camera Raw
      2m 32s
    7. Closing one image and Closing All
      1m 59s
  2. 38m 14s
    1. Navigating your image
      40s
    2. The dark vs. the light interface
      3m 12s
    3. Navigating tabs and windows
      4m 32s
    4. Panels and workspaces
      4m 27s
    5. Zooming incrementally
      4m 29s
    6. Zooming continuously
      2m 43s
    7. Entering a custom zoom value
      2m 25s
    8. Scrolling and panning images
      2m 31s
    9. Rotating and resetting the view
      2m 11s
    10. Cycling between screen modes
      3m 10s
    11. Using the Navigator panel
      3m 38s
    12. Adjusting a few screen prefs
      4m 16s
  3. 45m 58s
    1. Digital imaging fundamentals
      1m 45s
    2. Image size and resolution
      3m 3s
    3. The Image Size command
      3m 27s
    4. Common resolution standards
      3m 20s
    5. Upsampling vs. real pixels
      4m 36s
    6. Changing the print size
      6m 16s
    7. Downsampling for print
      4m 12s
    8. Downsampling for email
      3m 11s
    9. The interpolation settings
      5m 22s
    10. Downsampling advice
      4m 36s
    11. Upsampling advice
      6m 10s
  4. 53m 17s
    1. The layered composition
      1m 40s
    2. Introducing the Layers panel
      4m 12s
    3. Adding, scaling, and aligning layers
      5m 27s
    4. Dragging and dropping layers
      4m 36s
    5. Stack, reveal, and rename
      2m 58s
    6. Opacity, history, and blend mode
      6m 5s
    7. Duplicating a selected portion of a layer
      5m 32s
    8. Applying a clipping mask
      3m 58s
    9. Blending inside a clipping mask
      4m 10s
    10. Finishing off your artwork
      3m 13s
    11. Creating a new layer and background
      4m 24s
    12. Layering tips and tricks
      7m 2s
  5. 26m 19s
    1. The art of saving
      54s
    2. Four things to know about saving
      6m 0s
    3. Saving layers to PSD
      6m 38s
    4. Saving print images to TIFF
      4m 48s
    5. Saving an interactive image to PNG
      3m 41s
    6. Saving a flat photo to JPEG
      4m 18s
  6. 19m 36s
    1. Honing in on your image
      1m 43s
    2. The new and improved Crop tool
      3m 35s
    3. Editing your last crop
      3m 1s
    4. Straightening a crooked image
      2m 29s
    5. Filling in missing details
      6m 44s
    6. Using the Perspective Crop tool
      2m 4s
  7. 42m 6s
    1. First, there is brightness
      2m 12s
    2. How luminance works
      4m 18s
    3. The three Auto commands
      3m 27s
    4. Automatic brightness and contrast
      3m 19s
    5. The Brightness/Contrast command
      2m 47s
    6. The dynamic adjustment layer
      4m 5s
    7. Editing adjustment layers
      3m 52s
    8. Isolating an adjustment with a layer mask
      3m 31s
    9. Introducing the histogram
      4m 58s
    10. Measuring an adjustment
      3m 34s
    11. Using the Shadows/Highlights command
      6m 3s
  8. 44m 33s
    1. And second, there is color
      1m 31s
    2. Identifying a color cast
      3m 34s
    3. Correcting a color cast automatically
      3m 57s
    4. Changing the color balance
      6m 10s
    5. Compensating with Photo Filter
      3m 11s
    6. Adjusting color intensity with Vibrance
      3m 29s
    7. Correcting color cast in Camera Raw
      5m 46s
    8. The Hue/Saturation command
      5m 26s
    9. Summoning colors where none exist
      4m 8s
    10. Making more color with Vibrance
      4m 27s
    11. Making a quick-and-dirty sepia tone
      2m 54s
  9. 55m 46s
    1. Making selective modifications
      1m 10s
    2. The geometric Marquee tools
      6m 1s
    3. Aligning one image element to another
      4m 59s
    4. The freeform Lasso tools
      3m 59s
    5. Polygonal Lasso tool and Quick Mask
      5m 19s
    6. Cropping one selection inside another
      6m 15s
    7. Creating rays of light
      4m 44s
    8. Quick Selection and Similar
      4m 11s
    9. Making it better with Refine Edge
      4m 56s
    10. Integrating image elements
      2m 39s
    11. Magic Wand and Grow
      5m 17s
    12. Refine, integrate, and complete
      6m 16s
  10. 53m 49s
    1. Your best face forward
      1m 0s
    2. Content-Aware Fill
      6m 11s
    3. Using the Spot Healing Brush
      5m 36s
    4. The more capable "standard" Healing Brush
      5m 55s
    5. Meet the Clone Source panel
      3m 53s
    6. Caps Lock and Fade
      4m 57s
    7. The Dodge and Burn tools
      5m 1s
    8. Adjusting color with the Brush tool
      6m 35s
    9. Smoothing skin textures
      5m 58s
    10. Brightening teeth
      4m 0s
    11. Intensifying eyes
      4m 43s
  11. 51s
    1. Goodbye
      51s

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Photoshop CS6 One-on-One: Fundamentals
6h 39m Beginner Apr 26, 2012

Viewers: in countries Watching now:

Photoshop CS6 One-on-One: Fundamentals is a concise and focused introduction to the key features in Photoshop, presented by long-time lynda.com author and Adobe veteran Deke McClelland. This course covers the image editing process from the very beginning and progresses through the concepts and techniques that every photographer or graphic designer should know. Deke explains digital imaging fundamentals, such as resolution vs. size and the effects of downsampling. He explains how to use layers to edit an image nondestructively and organize those edits in an easy-to-read way, and introduces techniques such as cropping, adjusting brightness and contrast, correcting and changing color, and retouching and healing images. These lessons distill the vast assortment of tools and options to a refined set of skills that will get you working inside Photoshop with confidence.

Topics include:
  • Opening an image from Photoshop, Bridge, or Camera Raw
  • Navigating, zooming, panning, and rotating the canvas
  • Adding, deleting, and merging layers
  • Saving your progress and understanding file formats
  • Cropping and straightening
  • Adjusting brightness and contrast
  • Identifying and correcting a color cast
  • Making and editing selections
  • Enhancing portraits by retouching skin, teeth, and eyes
Subjects:
Design Photography
Software:
Photoshop
Author:
Deke McClelland

Straightening a crooked image

The Crop tool also includes a Straighten tool that's available from the Options Bar which allows you to drag along the horizon to straighten a crooked image. I have opened a file called Protector of Pisa.jpg, found inside the 06_Crop folder. Now it appears to me whoever last edited this photo had problems choosing between the horizon line and the Tower of Pisa because neither of them are plumb. Of course, we want the horizon to be perpendicular and the tower to lean. So I'm going to switch over to the Crop tool. And notice dead center in the Options Bar, we have the Straighten tool.

And you use it by dragging along the horizon line. Now you get one shot when using this tool because as soon you release the Crop tool goes ahead and rotates the image and automatically crops it as well. In my case, it looks like I've done a pretty good job of straightening that horizon line. But I don't want to cut away the model's feet. If you don't want this Auto Cropping function, then just go ahead and press the Escape key in order to abandon the crop, and work with the old school ruler instead. You get to the Ruler by clicking and holding on the Eyedropper tool and then choosing the Ruler tool from the flyout menu.

Now drag with the Ruler tool in order to create a line along the horizon. The advantage to working with this tool is you can edit that line before straightening the image. So you have the opportunity to get that line exactly right. And then once you do, you go up to Options Bar and click on the Straighten Layer button. The difference here is that while the Ruler tool goes ahead and generates an independent layer, so we're not clipping away any pixels, Photoshop makes no attempt to crop the image. It just rotates the layer inside the existing canvas.

You then have to return to the Crop tool. At which point you can decide exactly what the crop boundary is going to look like. Now, in my case I still have the 2x3 constrain active. So I'll go up here to this popup menu on the far left side of the Options Bar and switch it back to Unconstrained. And now I can drag these crop handles as desired. And I'm going to move this left side handle until it snaps to the edge of the image. And I'm going to drag this bottom handle all the way down so that would reveal the model's foot. And this looks pretty darn good.

Double-click inside the crop boundary in order to apply the crop. Now I'll switch back to the Rectangular Marquee tool. Now I still have some wedges showing with that transparency checker board in the background. So this is an imperfect crop, and I'll show you how to fill in those missing details in the next movie.

Find answers to the most frequently asked questions about Photoshop CS6 One-on-One: Fundamentals.


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Q: Where can I learn more about graphic design?
A: Discover more on this topic by visiting graphic design on lynda.com.
Q: When I double click the welcome.psd file included with the exercise files, I get the following error message:

"Some text layers contain fonts that are missing. These layers will need to have the missing fonts replaced before they can be used for vector based output."

Unlike the TIF and JPEG files which display and open correctly, all the icons for PSD files are blank but other than the welcome.psd file, they seem to open correctly without the error message. Is this a problem that I should address (perhaps re-download the files or find the missing fonts)?
A: The TIFF and JPEG files are flat, so they don't contain fonts and the operating system can interpret them (and generate thumbnails) without help from Photoshop. The PSD files have two issues:

First, they may contain editable text complete with font info. The files are designed with fonts that ship with Photoshop, so you don't get error messages, but Adobe sells some versions of Photoshop without fonts. This may be your issue.

Second, the PSD files contain no flat previews. This makes for smaller files, but it means the operating system, Mac or Windows, cannot generate previews. That won't effect your experience in Photoshop, but it does mean you can't see the file until you open it.
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