Continuity mistake: As Superman is walking up to the room that Lex is leading him to, it opens up and there is the red and green panel of the door on the side, but on the metal of the door frame. It then cuts to a closer, higher angle and suddenly the panel is beside the door frame on the wall.
Picture added by Quantom X
To submit a picture, just click the edit icon under the relevant entry, then choose 'add a picture'. Thanks!
All images remain the copyright of their original owners - these low resolution images are simply individual frames used to demonstrate the entry.