These files are currently in a scale that fits 62mm lenses. In a slicer, scale the filter in the two horizontal directions, but not vertical. Keep in mind that the scale size should be about 1mm smaller than your filter diameter (so for a 62mm lens, to get a good fit, these are 61mm)

For long term use, i suggest using a UV resistant material like ASA. Print in black.

For best results, keep aperature as open as possible.

I think the more subtle bokeh looks best.

In the preview images, i'm using a macro lens, so there is some distortion around the edges.