I find the night picture quite bright at my required min shutter of 1/150 - so I have taken the gain down to 50, and dropped the DNR to 35.
I find a high DNR really drops the picture quality on tracking and moving objects - DNR of 30-35 is a very good compromise especially when you are not running a very high gain.
The software is bit of a mess, there are settings which do not seem to do anything (like exposure value 1 to 5, what does this do?). Also something like the min-focus does not work right. I had mine set to 6m, nothing is ever going to be any closer than 10m to the camera - but I realised after a lot of fault finding, that anything other than 10cm causes an out-of-focus picture when zooming out to Z20.
It is also a shame the image switching settings do not allow you to attached different 'scenes' to different presets (unless I have not understood how to??), it works well for defining different 'scenes' for different times of the day.
There is some slight IR halo/glare on the right side, I don't use IR so not a huge thing for me - Also some lens flare when the sun is to the right & back of the camera <- these could be specific to my camera and location.
Otherwise pretty impressed - especially the tracking of people using the smart events.
I need to get another one of these and I will probably go for the 3MP version.