The first image was at ISO 16000 and this one at ISO 10000, reminds me how happy I am with how this camera performs at high ISO levels and still get reasonable shots
This is very good in low light photography. You can take good photos in low light conditions, including night. But if more light is present, then a lower ISO is better, because the photo will be more detailed. But with higher ISO, there will be more noise in the photo.
Probably you already know this, but this could be a new thing for people, who are beginning to learn (or interested in) photography.
you raise a very good point and as you say it may be helpful for others now thinking about it I should have said somehting similar in my post