i don't think so, because if they're real then why dont the ghosts haunt you? or someone else? it's just a bunch of photos or a bunch of videos of them taking a picture when a thing comes into the filming angle, i think that it's fake. it's just video editing.
It is not just film editing. There are plenty of photos that have not been uncovered as hoaxes. If a lot of normal people who are not insane, or mentally unstable can see them why are they fake? Do they get together and discuss pulling another hoax? People genuinely see them. There have been ghost and spirit sightings for centuries. Let me address where you said 'if they`re real why don`t they haunt you?' .Why are all ghosts supposed to haunt people? Its stereotypical 'ghost' behaviour. There are good and bad people in this world its probably the same with ghosts. In theory, ghosts are spirits who are trapped on earth because someone has done them wrong or they have unfinished business. They do not go round 'haunting' and scaring people. I , by the way am not some loony who is going around saying"ghosts exist, believe, believe." I am just thinking that they must exist if so many people see them.
sorry i got a live debating. so i forfeit the previous rmaybe there's an fireflies or a fly that its wings when then the photo captures. it becomes anomaly. so basically the round thingy is an anomaly, and besides that there's an human eye and an imagination, research has found that 65% of the people seeing horror movie (ghosts) are more likely see ghost on their way home.