A fun rainbow effect

I saw somebody ask about this effect on a forum, and I thought it might be fun to play. I can’t imagine anybody will ever use it, but hey, it’s the weekend, why not mess around?

Before:

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After:

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Start by making a Gradient layer:

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By default it will probably give you a black-and-white gradient …

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… but you can choose a rainbow instead:

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NOTE: If you can't find the rainbow option in your version of Photoshop, follow these instructions.

I also changed the angle and the scale a bit:

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NOTE: Always check the "Dither" box, to prevent the risk of banding.

Now the image looks like this:

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Play around with the layer blend modes. You’ll probably choose "Color" mode. Also adjust the opacity if necessary:

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Now make a Solid Color layer:

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And choose black:

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Invert the mask on that layer from white to black, to hide the black colour on the image:

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Then choose an enormous soft brush, and gently paint with white on the mask around the edges to add that aggressive vignette:

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Voila!

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If you have a question about this article, please feel free to post it in Ask Damien.