User Guide

Chapter 5: Editing
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Perspective Correction options
Background
color
When you correct distortion in a photo, the edges of the photo may bulge
outwards or shrink inwards. Use the Background color options to fill gaps
in the corners or sides of a corrected photo:
x Image: Select this option if you want to fill gaps in the corners or
sides of a corrected photo by placing the uncorrected photo in the
background. This is useful if the gaps are small.
Show Grid Select this option if you want to display a grid over the photo while you
correct distortion. This is useful if you want to assess whether objects in the
photo are straight.
Correcting barrel, pincushion, and fisheye distortion
You can use the Distortion Correction tool to correct barrel, pincushion, and fisheye distortion
in digital photographs. In barrel distortion the photo appears to bulge outwards from the
center. In pincushion distortion the photo appears to shrink inwards toward the center. In
fisheye distortion, the photo appears to bulge outwards from the center, as if the photo were
wrapped around a sphere.
Barrel, pincushion, and fisheye distortion are common in photos that were taken with wide
angle or zoom lenses.
To correct barrel, pincushion, or fisheye distortion:
1. In Edit Mode, on the Edit Panel, click Lens Correction.
2. On the Edit Panel, click Distortion Correction.
3. In the Type of Distortion section, select Barrel, Pincushion, or Fisheye.
4. Set the options as described below.
5. Do one of the following:
x Click Done to apply your changes and close the tool.
x Click Cancel to discard all changes and close the tool.
Distortion Correction options
Horizontal
center
Drag the slider to the left or right to identify the center of the image on the
horizontal axis.
Vertical
center
Drag the slider to the left or right to identify the center of the image on the
vertical axis.
Correction
strength
Drag the slider to the right until the objects in the photo appear to be
straight.
Scale Drag the slider to the left or right to change the scale of the photo.