Orton Filter

The amount of the dreamy look of our effect depends on the Blur radius.
We are not interested in changing any other parameter beside the Radius, so we can pull out the Radius value on the Canvas for easy access.

In the Building Blocks find Knob (log). When your mouse is anywhere over the Building blocks list, start typing "knob".

We are interested in the logarithmic version of the knob (the blur radius is a logarithmic value). Drag and drop the Knob (log) over the right side of the Blur object.