In the free graphic design program GIMP, you can locate a filter effect titled "Lens Flare" which will add a light source to your image in the form of a starburst, ring, circle or set of shapes. Although you cannot explicitly change the lens flare colour while using the tool, you can recolor the visible light sources after you have added them to your image.
- Skill level:
- Moderately Easy
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Launch GIMP. Click on "File" and "Open" to locate your desired photo or project.
Insert a new layer by clicking on "Layer" and "New Layer." A pop-up box appears; select "Foreground Color" as your "Layer Fill Type" and press "OK."
Go to "Filters." Select "Light and Shadow" and "Lens Flare" from the listed options. The Lens Flare settings box opens, showing you a preview of the flare effect. Use the up and down arrows to change the "X" and "Y" positioning of the light source; press "OK" when satisfied.
Click on the "Colors" tab and select "Color to Alpha." Press "OK" to change what used to be the foreground colour to transparency.
Select "Colors" again and click on "Colorify." Click on the colour you want your flare effect to become from the colour choices presented, or click on "Custom color" to see more options. Press "OK" when done.
Tips and warnings
- If you want to change the colour of the lens flare in a more subtle fashion than using "Colorify," use the "Color Balance" tool located under the "Colors" tab. With "Color Balance," you can "Adjust Color Levels" by degrees, using scrollbars to select a desired balance between cyan and red, magenta and green, and yellow and blue.
- Remember to save your edited picture using a unique file name if you do not want to replace the original image.
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