Holding a thick-bottomed drinking glass up and looking at a set of vertical blinds - then mirrored and joined.
I keep returning to this image. The more I look at it the more I like it.
Wow, thanks KG!
This was taken a number of years ago and likely taken with a Panasonic LX100. At the time I was using PSP v5 as my editing tool and it never kept the exif data intact so I have no idea what the parameters were.