By experimenting this way, we also noticed that the RAW files from the NX Mini showed particularly low noise even before Lightroom worked its magic. We ended up applying 25 percent reduction as a minimum for our official test results, since it gave the camera an Extremely Low rating from ISO 100 through ISO 1600 with little appreciable loss in resolving power. However, without any reduction applied in Lightroom, the NX Mini still maintained a Low or better noise rating up to ISO 3200. Under our test conditions, the NX Mini held a Low or better rating up to ISO 6400. At the NX Mini's top ISO it shows less noise than at ISO 12,800, which might seem strange. But, once you note the steep drop-off in resolution that we mentioned earlier, it seems that Samsung might have just been a tad heavy-handed in trying to keep the noise down.