The blur effect is versatile and has many possible applications in the realm of vector graphics. It is frequently used to enhance depth perception in a drawing, and to make certain elements stand out. It has its own section in the Inkscape menu (Menu | Filters | Blurs), where you will find several filter presets with descriptive names, such as "Apparition" and "Noisy". These presets combine different effects to produce a particular blur, and can be modified using the Filter Editor.
This recipe will show us how to use the Gaussian Blur filter and introduce us to some basic filters related options.
The following steps will demonstrate how to use Blurs: