When Carmen photographs the gargoyle statue in the clearing, she holds the camera in a normal horizontal (landscape) position. Seen from reverse a second later, the camera is vertical (portrait).
When Carmen first enters the "fog" area & sees the statue, her hair goes from neat to messy & back again several times. Her makeup also suddenly refreshes itself.
When they opened the first coffin, it is on the top of another coffin. But when they opened Eric's coffin, the first coffin they opened is on the floor.