At our last meeting I mentioned a chart that would give you an indication of the dynamic range (optimum ISO range) for your camera. Here is the link:
This may be a bit more technical than most of you want, but take from it what you will. At the list on the right side, click on your camera or cameras (you can enter more than one for comparisons) and a chart will show up showing the dynamic range at various ISO settings. You can then use that info to guide you in setting your cameras “Auto ISO” range.
We can talk about this some more at the next meeting if anyone wants to.