Hi guys,
This is a workaround tutorial. I have summarized the findings of this discussion thread in a short video tutorial. It shows a way how to make a shape, how to assign a distortion filter, how to adjust the effect within the shape and how to make the effect movable around the picture.
However, it also shows the limitations. It is currently not possible to directly associate a shape with a lens effect. Better would be:
that we could assign a live filter directly to a shape,
that the life filter is moving its position relative to the shape
Possibly, the Affinity Photo team can comment it?
Best regards
Blauer Claus
Tutorial Distortion Effect.mov