Go to the scene where the Robinsons are in the jungle place in the Proteus. You need to find the scene where they emerge through the jungle on a path. You will recognize this shot because it is a moving camera shot, that is, the camera moves back as the Robinsons walk directly towards it. Once you are there, look down at the path they walked on. You will notice the tracks for the camera. It is a different color than the ground, you'd think they would take enough care to color them the same. This slipup is even more noticeable on DVD.