We had one evening of light drizzle while we were in Santorini and it arrived just as I was taking this photograph. My camera was sitting on a white painted concrete ledge on a slow shutter speed. The ledge was quite bumpy and being wet it must have bounced the light back into the camera lens creating this unexpected Bokeh effect. A pleasant surprise. Travel Tip: Wear shoes with good treads if it rains in Santorini, the marble footpaths and steps become very slippery.