https://www.instagram.com/p/CONgtDuFozh/ ins: iwakurashiori
This photo has light dot bokeh in front of the subject, seemingly coming from the sun. How was this done, or how can the effect be achieved?
A bit of black-belt Google-fu & Google Translate found the definitive answer, from the photographer themself.
It's an in-camera double exposure (proving my original theory wrong;)
It was so beautiful that I used the features of New FM2 for multiple exposure. I took a picture of a person first, and by overlaying particles of light on the dark part, I captured the beauty of the light reflected on the surface of the water.
Via Google Translate from nikostop.nikon-image.com
Although Tetsujin has broken the illusion and ruined our creativity by providing a fact check inquery ☺️...
A similar effect could be done by spraying some water drops or another liquid on a sheet of glass in front of the lens.
Of course, you would not have the hexagonal shape but a rounded one.
You could play a bit with the distance between the lens and the glass, or even the angle of it.