Perspective Correction

The Perspective Correction filter corrects perspective distortion in digital photographs. Perspective distortion is caused by wide-angle and telephoto lenses, which distort the perspective of large or far-away objects. For example, when taking a photo of a tall building, the building may appear to be narrower at the top even though the building is the same width from top to bottom.

To correct Perspective Distortion:

1. Select Filter | Geometry | Perspective Correction from the main menu, or press Ctrl + Alt + D.
2. An outline displays around the image. The outline has yellow handles at all four corners, and in the middle of all sides. Drag the handles to change the perspective.
3. Set the options as described below.
4. Do one of the following:
   • Click OK to apply any changes and close the tool.
   • Click Cancel to discard all changes and close the tool.

Perspective Correction Options

Background color	When correcting distortion in a photo, the edges of the photo may bulge outwards or shrink inwards. Use the Background color color picker to select a color for filling-in gaps in the corners or sides of a corrected photo. Enable the Transparent checkbox to use transparency to fill-in gaps in the corners or sides of a corrected photo.
Show Grid	Enable the Show Grid checkbox to display a grid over the photo, which is useful for assessing whether objects in the photo are straight.

See also:

• Correcting Lens Distortion