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by Wendi E. M. Scarth.
 

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Rainbow Seascape 
GIMP

 

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 Fantasy Rainbow Seascape
GIMP (GNU) -
Intermediate

Fantasy Rainbow Seascapes GIMP

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This GIMP (GNU) tutorial demonstrates how to enliven a dull photograph by applying a rainbow Gradient to it. To work along, you are welcome to download the Start Image (Tynemouth) -  I am working with HereUnzip the file and open the image onto GIMP’s workspace.

Notes
You can quickly Undo a step at any time by pressing Ctrl then Z. Alternatively, click a previous Undo History snapshot - Windows then Dockable Dialogues then click Undo History. In addition, to Zoom in (or Zoom out) of your image; from the top menu, choose View then select a Zoom Tool from the subsequent drop-down list.

Understand Layers
Understand Blend Modes
Launch GIMP & Organise Its Workspace & Palettes

1/
Open your choice of Start Image onto GIMP’s workspace - File then Open - Ctrl then O.

Note
Ensure the Layers and the Undo History Palettes are visible, and then drag them into position over your workspace - (Windows then Dockable Dialogues - then click Layers and Undo History).



2/
Now, create a New Transparent Layer by clicking the following Create a New Layer tab that is located at the bottom-left of the Layers Palette. (Ctrl then N).



Then from the subsequent New Layer dialogue box, click OK.

               

3/
Then from the left-side Toolbox, activate the Blend Tool.



And from the Blend Tool’s left-side Options Box, click open the Gradient Swatch, and from the subsequent drop-down Gradient Library, click over a Gradient you like the look of. I have selected the following Full Saturation Spectrum Gradient

Note
For personal results, experiment with different Gradients and Gradient Shapes.

                        

4/
Now, still working on the New Layer: press down the Ctrl Key and simultaneously left-click and stretch vertical “Gradient Line” in the direction illustrated below. 
 


As soon as you release the mouse button, your choice of Gradient will be applied over your image.
      




5/
Understand Layers - Understand Blend Modes
From the Layers Palette; change the Rainbow Layer’s Blend Mode from Normal to Overlay.

Note
For personal results, it’s important to experiment with different Blend Modes and discover a blend that suits your needs.
 




6/
To finish, from the top menu, choose Image and then choose Flatten Image.
 


Sharpen Tip
To create extra impact, apply a
Sharpening Filter of your choice - Filters then Enhance.



7/
Congratulations, your work is complete,
and it is ready to save - top menu, then File then Save As. GIMP 2.8 - File then Export.
 
Now you are familiar with this technique, you can have lots of fun reviving dull photographs by applying a colourful gradient to them.

Fantasy Rainbow Seascapes GIMP



Wendi E. M. Scarth. 
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