Adding a rainbow to a picture using Adobe Photoshop
The purpose of this tutorial is to show how to add a rainbow into a picture. First, you must choose carefully the type of image you want to work on. Taking into consideration that we are going to add a rainbow, it is best to choose a landscape image. If you have a shot taken after a storm is even better, as it will give a bit more realism to the final image. You can create such an image either from scratch. Follow the step by step instructions for more details.
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