This GIMP (GNU) tutorial demonstrates how to apply mist over water using GIMP’s Fog Filter. To work along, you are welcome to download the Start Image I am working with Here. Unzip the file and open the image onto GIMP’s workspace.
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
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).
Launch GIMP & Organise Its Workspace & Palettes
Open your Start Image onto GIMP’s workspace - Ctrl then O.
Now, from the top menu, choose Filters then Render then Clouds - and then choose Fog.
And from the subsequent Fog dialogue box, set the Fog Colour to White - then click OK inside the set colour dialogue box - as demonstrated below.
Then change the (Clouds) Turbulence to 1.5, and click OK.
As you can see by my illustration below, the Fog Filter has been applied onto its own Layer.
For personal water mist; it’s important to experiment with different Fog Colours and amounts of Turbulence.
Purple Water Mist Example
Now, from the Layers Palette, reduce the Fog Layer’s Opacity from 100% to around 65%, as demonstrated below.
Then from the top menu, choose Image and then choose Flatten Image.
Unwanted areas of mist can be removed using the Eraser Tool.
Congratulations, your mist over water photo conversion is complete, and it is ready to save.
Wendi E. M. Scarth. Top of Page.