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In some cameras, the proximity of the flash to the lens causes the light from the flash to reflect from the subject's retina to the lens, leaving a red eye mark on the image. Referred to as a red eye, the size of the mark depends on the amount of light reflected. The gThumb software can be used to remove the red eye from images.

To remove red eye from an image:

1. In the gThumb window, double-click the thumbnail of the image that has a red eye. The image opens in a new window.

Figure 8.9: Image with a Red Eye 2. In the edit window, click Image and then click the Redeye Removal option. The Red-Eye Removal dialogue box opens.
Figure 8.10: Launching Redeye Removal Dialogue Box

3. Click on or near the affected region, to replace the red eye with black. If you are not happy with the result, you can click the Undo icon in the Red-Eye Removal dialogue box. Click Save to replace the affected image with the edited one in the gThumb window.

Figure 8.11: Removing Red Eye

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