At least once a roll, I accidently take a Horizon picture in the slow setting... Pulling the camera out of my bag will shift the little shutter speed button on top, which I tend to forget to check. The pictures are usually overexposed, as you would expect. But to my surprise, scanning them will almost always produce a pretty good image, considering the slow shutter time. They will have a bit of a color cast, but I kind of like them anyway. Its like a vintage filter.