Abstract Thursday - Brainteaser

Can you tell it is raining (again)??

For this I simply placed a puzzle box on a flat surface, held the camera above it, focused and ensured that I had a lengthy exposure by reducing aperture. I pressed the shutter and let the lens zoom by itself using gravity. This minimised camera shake from manual zooming!

This four second exposure gave the most pleasing effect for me - and I thought the title of the puzzle (Brainteaser) was appropriate for Abstract Thursday