Long lost filter

[denzjos]

I think tmanni answered with the right solution, mean curvature blur. There is also a (transparent) face, hands and smartphone from the photographer visible on the photo and on the right side a piece of a window frame. I think the photo is taken from reflection on a window and then used the mean curvature blur filter. The photo has an orange color haze because it was long exposed to light. I've used the filter on another photo to show a photo before/after :