If it was flat(ish) I probably wouldn't have worried about it, but same setup, same light, etc it was all over the place. Also another weird observation, this app messed with my shutter count. It increased it 600 actuations on one test. checked one report and it stated I had 927 and the next test I had over 1500, but only took like 60 shots for the test. It's not that I care, it was just something strange that I noticed.