It is raining when Ben and Jane drive down the road. When they hit the ghost, the scene fades to black. When the scene fades back in, it's snowing heavily, and a thick sheet of snow covers the ground. They start talking as they get out of the car, and the snow stops.
The morning after the road accident, Benjamin and Jane are taking pictures of themselves outside. Benjamin is on our RIGHT hand side with Jane on our LEFT. A few minutes later, the pictures are shown to us. Benjamin is now shown on our LEFT with Jane on our RIGHT.
While in the honeymoon cabin, the camera Ben is using is clearly a medium format camera. Later however, when they are looking at the pictures Seiko dropped off, the negatives attached to the envelope are 35mm negatives.
At one point, Jane says she must call New York, but Ben says it's 3am there, yesterday. This is a mistake. If it was 3am in New York, in Tokyo it would be 4pm in the afternoon on the same day (give or take an hour for differences in daylight savings).