This GIMP (GNU) tutorial demonstrates how to apply Film Grain to a photograph. 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 list.
Launch GIMP & Organise Its Workspace & Palettes
Open your choice of Start Image onto GIMP’s workspace - File then Open - Ctrl then O.
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).
Now, from the top menu choose Filters then choose Noise then choose HSV Noise.
And from the subsequent HSV Noise dialogue box, enter the following settings, or experiment, and then click OK.
Settings are dependant upon your image’s Resolution, and the look you are seeking.
Your image will benefit from a Sharpening Filter. From the top menu, choose Filters then choose Enhance then choose Unsharp Mask. And from the subsequent Unsharp Mask dialogue box, enter the following settings, and then click OK.
Sharpen Images Tutorial
The HSV Noise filter creates noise in the active layer or selection by using the Hue, Saturation, Value (luminosity) colour model.
This preview displays interactively changes before they are applied to the image.
This slider (1 -8) controls how much the new pixel colour value is allowed to be applied compared to the existing colour. A low holdness will give an important hue variation. A high holdness will give a weak variation.
This slider changes the colour of the pixels in a random pattern. It selects an increasing available colour range in the HSV colour circle starting from the original pixel colour.
This slider increases saturation of scattered pixels.
This slider increases brightness of scattered pixels.
Congratulations, your Film Grain Conversion is complete, and it is ready to save - top menu, then File then Save As. GIMP 2.8 - File then Export.
Wendi E. M. Scarth. Top of Page.