Rx100 newbie, some fall colours, and an Auto-ISO question

Raise the floor of the Auto ISO to better match your lighting conditions.  Increase the bottom setting from 125 to 400 or even 800.  You will then have shutter speeds faster than 1/f and mminimize blur caused by movement (photographer or subject or both).

For non-critical moment shooting. use the 2-second delay to minimize camera movement when releasing the shutter.  The RX-100 is hard to hold still when pressing the shutter release, especially relative ro shooting with your Nikons.

Kent