That could be a bug though, but way too far to be dust. Depends if it’s floating, or on the edge of the end table or on the wall.
Easier to see where it is, if you look at the photo before that captured nothing interesting. I did circle it though.
Image with nothing, no need to watermark it or circle anything.
I probably miss some of the images with stuff, as it has to be obvious, or I’m probably going to miss it. I don’t examine the pictures the security camera takes very closely, as most of them have nothing in them.
I should examine pictures without the IR, and see if anything is being captured. That is when I’m awake. If it captures something without IR, the IR light trick theory and dust are both gone.