This was our last film for production class last year, as well as the first film we were allowed to use sound. That window of Manhattan in the background was actually done in post - we had shot this at night, but my professor thought the lighting looked more like daylight lighting, so I had to edit in the window to really make it look like this was taking place during the day. That was a piece of cake compared to creating the "green fairy" effect! :D
Shot on a Canon XL2.