These Minox cameras are notorious for having intermittent shutters and bad ISO settings. This one seems to be no exception...the first roll was blank and the second roll was mostly blank with only a handful of usable images. The variable exposure really shows on the redscale XR. I had it set to 25 but some of these are clearly looking more like 100 or 200. Still, it's such a cool little camera that I will try again or try to find another one that is working properly.