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Thank you very much, @momzillanc, they were just fun to see how it works, and I have learned, that photographing drops is not as easy as it seems 😉

No, it's not easy at all. We had an assignment in art school to photograph drops of liquid. It was a serious pain me and all my classmates and used up roll after roll of film to get a handful of shots we could turn in for the assignment. At least now, it's all digital.

I can imagine that shooting waterdrops on film was a pain, because you didn't immediately see if the photo was ok.
Digital photography has made such photos, and of course photography at all so much easier.