When the film begins when Jack prepares to board the Titanic, his backpack is obviously a military backpack produced in 1939.
When the Titanic sets sail, if you look closely, you will find that the people on both sides of the ship are the same.
Usually a huge ship will produce a big wake when passing by, and its power can even overturn some small boats. When the Titanic set sail, there was a fisherman's fishing boat standing still nearby.
In a dancing scene in a ballroom with many mirrors, a camera and crew members appeared in a mirror.
In the scene of the long table restaurant, there is a flashing shot showing that one of the diners is actually wearing a pair of Nike shoes.
In the dining room, Jack asked Ruth to borrow a pencil, and when he wrote it showed that it was a pen.
Ruth broke the glass of the cabinet with the fire axe and took out the axe to rescue Jack who was handcuffed. In the later shots, the glass of the fire cabinet was intact.
When the Titanic was sinking, Jack and Ruth were running inside the ship, and a camera and crew members appeared in a scene.
When the stern sinks into the water and the bow is raised high, some lines hanging from the side of the ship are not perpendicular to the water surface but perpendicular to the side of the ship. This is obviously a model ship.
When Carl took a pistol through the dining room to hunt Jack and Ruth, there was a window behind it through the daylight, and the shipwreck was at night.
Jack begged the captain to abandon the ship and escape with everyone. The captain stubbornly refused; there was a large mirror in the room at that time, through which the crew could be clearly seen.
When the crew on the rescue ship called for the survivors at sea, there was an answer, and there was no answer when calling on the boundless sea.
