I was warned - but I still watched it.
Plot ruined by terrible acting, terrible effects, terrible dialogue and character interactions. They could have foregone the badly animated effects, particularly the ghost on the train track which looked like the Pilsbury Dough Man without a head, and spent it on better actors. Having a ghost at every turn could be replaced perhaps with long pauses where the viewer's imagination creates a sense of something. The two main characters, film-makers, had no discernible relationship as friends, the one with darker hair was just angry all the time and completely ignoring the fact that his friend had seen ghosts even though he was setting up cameras to find ghosts. There are other emotions in life. Perhaps they should have been two less emotional college friends studying film. The taller one was also not a very good film-maker anyway as he didn't seem to film anything.
The camera filter was also odd, sort of dark-edged, not either good quality and saturated or just hand-held home camera. The sound was also strange as if it had been dubbed, the position of the source didn't seem to match where people were standing sometimes.
I also think that the makeup artist hired to turn the main female character into an angry spirit thought that she was preparing Marilyn Manson for a gig.