With auto -setting the 930 seems to prefer faster shutter times and higher iso. You can manually stretch exposure time a lot more and use lower iso. Pictures will be much better that way. Simply adjust iso-setting manually, try what gives you the best results. If you have a steady hand, go for iso 200, if that gives you blurry images try iso 400. Iso 800 is absolutely the maximum, after that the noise becomes unbearable.