Sacha

Revealing mistake: When the helicopter gets jammed on the white railing at the ceiling, Lois is replaced by an obvious dummy that dangles back and forth with no control.

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Revealing mistake: All the footage of the missiles being launched is of a poor quality and grainy, which is inconsistent with the good quality of the rest of the shots, revealing that it's stock footage.

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Revealing mistake: Superman has just saved Jimmy at the dam and is holding him in the air. Jimmy's fringe is standing up thanks to some hair fixer to achieve the effect of wind blowing (though it's a green screen effect). When Superman sets him on the floor his hair remains up giving away the trick, until the angle changes and it looks all combed and nice.

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Revealing mistake: In the extended version, when Luthor fires snow at Superman, the icicles bounce, rather than shatter, revealing they are some type of foam or plastic balls.

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Revealing mistake: When Superman takes Otis and Luthor to the prison wires holding them are visible.

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Revealing mistake: When in the prison yard, Luthor's bald cap is hanging loose around his nape.

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Revealing mistake: After saving Jimmy from falling to the dam, during the flying sequence a couple of wires are seen between them.

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Revealing mistake: When Superman holds the plane's engine, the "S" on his shirt is looking the wrong way, revealing the angle was flipped.

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Revealing mistake: On the Golden Gate bridge, the beetle car that skidded a split second before appears totally empty when the van crashes against it.

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Revealing mistake: Before the Hoover Dam breaks, the places where all the cracks and water will later appear are easily traced on the concrete, covered in plaster and painted. Either that, or the real Hoover Dam has burst many many times and always through the same spots.

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Revealing mistake: When Lois falls from the helicopter, the cable holding her is visible.

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Revealing mistake: When Superman leaves the prison, wires holding him are visible.

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Revealing mistake: When Superman lands the burglar, wires holding him are visible for a brief moment.

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Revealing mistake: Under Grand Central, the train that passes by Otis is the same one (5048) that kills the cop.

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Revealing mistake: In Grand Central Station, the same extras appear in every scene, no matter where in time or place occurs.

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Revealing mistake: After Superman saves the cat, he takes off and wires holding him are visible.

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Revealing mistake: After jumping in front of the train, Clark runs leaving a white trace behind. Watch the grass on the lower right and you'll see the scene is speeded up.

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Revealing mistake: When Lois is at the heliport, watch the wind flag on the left: when the helicopter arrives, the roaring wind from the vanes makes the flag move up and get stiff. In the close-ups, you keep on hearing the sound but the vanes are off screen. Watch and you'll see the wind flag is down, thus revealing that the engine is off and that the sound we are hearing is fake.

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