Having a residual habit from film; avoid spending money on anything over an ISO value of 400, I tried out the classes recommendation at a music concert participated by my grandson. Images at low light from the audience, I shot ISO 800 on the girl in a hat and 1600 on the other while also boosting the saturation by one stop on the Sony creative style setting. Both pictures have been cropped for effect. Not bad ... my old rule needs to be trashed.