Just to reply to myself, mjpg-streamer-experimental also has mmal support. Not sure what it is doing differently than motion but image quality is significantly better, probably on par with raspistill.
Some troubles with a camera module 2.1 (not-noir) on a Raspbian buster, version 2019-09-26 on a pi4 b, with motion 4.1.1 Taking image snapshots with raspistill and raspivid works beautifully, day and night. Exposure is proper, contrast is high, excellent! Now I'm trying to make this work in the "mot...
Kan je in een terminal (zelfde waarin je raspi-update gedaan hebt) eens "ifconfig eth0" typen, en de output kopieren? Bij uitbereiding "cat /etc/resolv.conf", "route -n" en ethtool eth0