Mine worked but I was WAY too far away for my super wide angle pinhole camera. In the center of a completely black polaroid, I have an area about the size of a quarter, with 3 streetlamps, some cool looking car headlights and tail lights, and a little red blurry area where all the fireworks happened.... It actually looks sort of neat and I'm glad I did it, but next time I'm not doing it unless I'm right up under the fireworks.