Online Test Banks
Score higher
See Online Test Banks
eLearning
Learning anything is easy
Browse Online Courses
Mobile Apps
Learning on the go
Explore Mobile Apps
Dummies Store
Shop for books and more
Start Shopping

Correct Camera Distortion in Photoshop Elements 10

The Correct Camera Distortion filter in Photoshop Elements 10 fixes the distorted perspective created by both vertical and horizontal tilting of the camera. As a bonus, this filter also corrects other kinds of distortions caused by lens snafus.

If you’ve ever tried to capture a looming skyscraper or cathedral in the lens of your camera, you know that it often involves tilting your camera and putting your neck in an unnatural position. And then, after all that, what you end up with is a distorted view of what was an impressive building in real life, as shown with the before image on the left.

image0.jpg

Here’s how to fix all:

  1. In either Full Photo Edit or Quick Photo Edit mode, choose Filter→Correct Camera Distortion.

  2. In the Correct Camera Distortion dialog box, be sure to select the Preview option.

  3. Specify your correction options:

    • Remove Distortion. Corrects lens barrel, which causes your images to appear spherized or bloated. This distortion can occur when you’re using wide-angle lenses. It also corrects pincushion distortion, which creates images that appear to be pinched in at the center, a flaw that’s found when using telephoto or zoom lenses. Move the slider while keeping an eye on the preview. Use the handy grid as your guide for proper alignment.

    • Vignette Amount. Adjusts the amount of lightening or darkening around the edges of your photo that you can get sometimes from incorrect lens shading. Change the width of the adjustment by specifying a midpoint value. A lower midpoint value affects more of the image. Then, move the Amount slider while viewing the preview.

    • Vertical Perspective. Corrects the distorted perspective created by tilting the camera up or down. Again, use the grid to assist in your correction. The vertical perspective is used in the figure to correct the building and man. Even though this image was intentionally shot like this, the perspective was a little too extreme and needed to be toned it down a bit.

    • Horizontal Perspective. Also corrects the distorted perspective. Use the grid to make horizontal lines (real and implied) in your image parallel. For better results, set the angle of movement under the Angle option.

    • Angle. Enables you to rotate the image to compensate for tilting the camera. You may also need to tweak the angle slightly after correcting the vertical or horizontal perspective.

    • Edge Extension Scale. When you correct the perspective on your image, you may be left with blank areas on your canvas. You can scale your image up or down to crop into the image and eliminate these holes. Note that scaling up results in interpolating your image up to its original pixel dimensions.

      Therefore, if you do this, be sure to start with an image that has a high-enough pixel dimension, or resolution, to avoid severe degradation.

    • Show Grid. Shows and hides the grid, as needed. You can also choose the color of your grid lines.

    • Zoom Tool. Zooms in and out for your desired view. You can also use plus and minus icons and the zoom pop-up menu in the bottom-left corner of the window.

    • Hand Tool. Moves you around the image window when you are zoomed in.

  4. Click OK to apply the correction and close the dialog box.

blog comments powered by Disqus
Advertisement

Inside Dummies.com

Dummies.com Sweepstakes

Win $500. Easy.