Animation of the filter primitives
stdDeviation of feGaussianBlur in objectBoundingBox units is animated after 3s for 30s and is frozen.
The initial stdDeviation is .04 .04. The values are:
0.2 0.1; 0.1 0.2; 0.05 0.07; 0.01 0.02; 0.003 0.00001; 0 0; 0 0; 0.01 0.02; 0.1 0.1; 0.3 0.2; 0.4 0.3; 1 2; 5 3.
The width of the graphic is 1 for comparison.
Additionally there is a centered black stroked ellipse indicating the stdDeviation of the filter as main half axis.
A large sized ellipse corresponds to a smooth filter effect, a small ellipse corresponds to a sharp shape (a stroked
circle).