Found a way to create fake diffraction spikes using GIMP. Process comes down to defining a new brush in the shape of a cross, and then using that brush to create spikes in a new layer. Will post a procedure in the next few days.
Found a way to create fake diffraction spikes using GIMP. Process comes down to defining a new brush in the shape of a cross, and then using that brush to create spikes in a new layer. Will post a procedure in the next few days.