There are hundreds of thousands of movies with the hero and heroin dancing around in open fields and millions of those pictures on websites. Ever seen that in real life?
why in the blue earth these goras r trying to prove that such “things” can be captured in the camera frame, as it does not has any certain logic behind it…
In old late 19th century and early 20th century photos.
There was often a ghost effect this was due to poor Cammeras more than anything the glass plates upon which the images were developed were vulnerable to temprature changes and could easily be tampered with to create false ghost hazes.
Also Phospherous contents of some early polariods caused pictures to have an abnormal haze especially if they captured an object in motion for example someone running or laughing… there would someitmes be a background image which looked like a ghost but was nothing more than a poor and rare technical glitch.
but i have seen in some movies n horror serials that ghosts cant appear in mirror or camera n in some movies i have seen that ghosts can appear in mirror n cam what’s correct??
n in some movies i have seen that ghosts can appear in mirror n cam 
what’s correct?? 
the ghost would be less horror than u