Movies rely on their sense of immersion to keep you entertained. Ideally, for two or three hours while you sit in front of the screen, you forget about all your problems, your worries and your responsibilities. The thing that movie studios absolutely do not want is for some glaring error to pop up on screen and remind you that what you're watching is just a movie, nothing more. It not only ruins your experience, it's also embarrassing for all the people who spent months working on a project only to have a cameraman show up in a mirror.

RELATED: 15 MCU Movie Mistakes (That Marvel Hopes You Won’t Notice)

The DCEU has received a lot of criticism for some lackluster films, and while those complaints may or may not be valid, there's no denying that the DCEU films are not perfect. Every movie has some mistakes that were missed during the editing or shooting process, but the DCEU has some errors that were right there in the script, but no one bothered to correct the directors as they went. If you're ready to spoil your sense of immersion in the DCEU to pick out these mistakes, then strap in and get ready for 15 mistakes in the DCEU that you never noticed!

15 DIANA AND THE MAGIC SAILBOAT (WONDER WOMAN)

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When sailing away from  Themyscira to London on the sailboat, both Diana and Steve go to sleep at the same time soon after they set off. This might probably be fine on a motorboat, but sailboats are constantly affected by the wind and would be easily taken off course. When they wake up, they could have drifted miles in one direction or the other with no way to get back on course until they hit land somewhere. Diana can be forgiven for not knowing how to get there, but Steve is supposed to be navigating to London.

Although, perhaps it doesn't matter anyway because the sails on their boat don't open with the wind. When they set off, and throughout the trip, the sails just hang there on the boat limply rather than inflating with the wind. Do the Amazons have magic sailboats that just GPS their way to your destination?

14 DIGITAL SNOW (SUICIDE SQUAD)

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Toward the beginning of Suicide Squad, during the flashback sequence that shows how Floyd Lawton was captured by Batman, Floyd and his daughter walk down the street on a snowy night and down an alleyway.  At least one layer of the falling snow is obviously digital as there are a few different points where the snow stops, goes back up, then glitches and starts falling again with the same trajectory in which it fell the first time.

In fact, throughout the scene, if you watch closely, you can watch the snowflakes fall in the exact same pattern and path every few seconds. Now that digital animation has become so much easier, directors often add in digital layers of snow to make it seem heavier because it's less expensive than buying thousands of pounds of fake snow to drop on the actors from above.

13 LIGHTS OF METROPOLIS (MAN OF STEEL)

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The grand finale battle of Man of Steel features an epic battle between General Zod and Superman where they lay waste to Metropolis, leveling building after building in their wake as they fight. Even toward the end of the fight, which goes on for an exhausting 45 minutes, lights in Metropolis can still be seen in each of the buildings.

However, emergency systems are designed to shut down the power grid if just a few buildings are badly damaged. You can see evidence of this from the footage of Hurricane Katrina. The attempts to evacuate also seem to take a mind-bogglingly long time. Even 40 minutes into the fight, you still get shots of people up in their offices as if their city isn't currently being destroyed.

12 THAT'S NOT HOW DUST WORKS (BATMAN V SUPERMAN)

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In the opening scene of Batman v Superman: Dawn of Justice, Bruce Wayne is running around Metropolis during Superman's battle with Zod, and at one point, runs through a massive dust cloud that other citizens are running through as well, but as the scene goes on, neither Bruce, nor anyone else is covered in dust.

You can see how clouds of dust cling to people in the footage from 9/11 when buildings fall, but everyone seemed to be relatively clean in Batman v Superman. It's especially strange because the same scene in Man of Steel actually gets this right. Everyone is covered in gray dust pretty early on in the scene. Since both films were directed by Zack Snyder, it makes you wonder why he didn't keep that attention to detail in the second film.

11 THAT'S NOT HOW CHEMISTRY WORKS (WONDER WOMAN)

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Wonder Woman was, by most standards, an excellent film, but they seem to have a problem with the basic science most of the time. At one point in the film, Chief says that the poison gas should be flammable because it is hydrogen-based, but that doesn't make any sense. Yes, pure hydrogen can ignite and cause explosions, but it is one of the most common elements of the universe and there are thousands of substances that are hydrogen-based which aren't flammable.

One of the most notable examples of this is water, which is made up of mostly hydrogen, but no one would ever claim that it's flammable because of it. They later confirm that the gas is flammable, but no one ever tells Chief that it has nothing to do with the hydrogen.

10 HARLEY'S EVER-CHANGING HAIRSTYLE (SUICIDE SQUAD)

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Harley Quinn's hair changes so often throughout Suicide Squad that there's a chance it might actually be some kind of latent meta-human superpower. In the flashback scene where she gets caught by Batman, the car she's in is submerged underwater and her hair is completely blonde, but as he's carrying her to the Batmobile, the ends are pink and blue.

Later, when she's putting on her outfit for the Squad, her hair is all white again until she puts it up, then her ponytails are straight and colorful, but then her hair changes again later on from the straightened style to a salon-quality curl. A few scenes later, it blends the straight and curly style and stays that way for the rest of the film, but in the final battle with Enchantress, there's a shot that's flipped where her pink and blue switch sides.

9 FOOTPRINTS IN THE SAND (MAN OF STEEL)

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Toward the end of Man of Steel, Superman intercepts a drone missile and hurls it down at General Swanwick's car to get his attention. As General Swanwick steps out of the car, you can clearly see footprints imprinted in the dirt in what's supposed to be a remote part of the desert that doesn't regularly see people walking around, even more so because this is in the middle of the dirt road where Superman stopped the vehicle.

What's even more telling is that General Swanwick steps directly into the same footprints as he walks, making it obvious that they've done several takes in the same spot and didn't bother to clear away the footprints after each take. It's not something you would necessarily notice without thinking about it, but once you see it, you can't unsee it.

8 EVERYONE GET BEHIND BRUCE WAYNE (BATMAN V SUPERMAN)

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Another odd moment in the opening scene of Batman v Superman: Dawn of Justice is right as Bruce gets out of his car for the first time. He pulls up to a crowd of pedestrians and a few of them move, but the crowd is too thick to drive through, so he gets out of his car to see what everyone is looking up at.

They look up at the World Engine that's destroying the city, but when the shot moves back to show Bruce looking up, the massive crowd has moved behind his car and he's directly in front. Did everyone decide to get behind his car after he got out? This continuity error is especially jarring because the shots are only a second apart, and the only reason Bruce got out of his car at all was because of the crowd in front of him.

7 LOIS AND THE BLACK HOLE (MAN OF STEEL)

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Towards the end of Man of Steel, Superman destroys the Kryptonian ship which causes a black hole-like singularity that starts pulling in everything around it. It also causes Lois to fall to the Earth before Superman flies up to save her.

What's odd is that in the same shots that show Lois falling through the air, you can clearly see cars, trucks, and massive chunks of buildings being sucked up into the singularity while Lois falls in the opposite direction, as if she's completely unaffected by this massive force of gravity. When Superman catches her, he immediately starts struggling against the pull of the singularity as well. How was Lois the only thing not being pulled into the black hole when much heavier objects were being lifted from the ground around her?

6 VISIBLE CREW AND EQUIPMENT (DCEU)

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For all its real world grounding, the DCEU seems to have a ridiculous problem with keeping crew members and film equipment out of shots. Among the numerous times this happens, the worst offenders are in Man of Steel and Suicide Squad. During the final battle in Man of Steel, when people are rushing toward an ambulance, the camera moves across a car windshield where a boom mic is reflected in the glass. You could mistake it for a street lamp, except that it clearly moves with the camera.

In the flashback scene of Suicide Squad that shows Floyd negotiating his price on a rooftop, there's one wide shot where you can see a crew member hiding under a blanket to his left. Towards the end of that opening, where Amanda Waller is in the restaurant, you can see the camera operator reflected in her wine glass.

5 SURROUNDED BY SNIPERS! (WONDER WOMAN)

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In what's easily the coolest scene of Wonder Woman, Diana charges into enemy territory against dozens of soldiers with nothing but her shield and the lasso of truth, and she still comes out victorious. When she gets into the main part of the town, at one point, you see a Russian sniper aiming down at her from a window behind Diana.

The shot changes and Diana turns around, but the sniper is still in the window behind her. It's clearly the same sniper, and there's no reason Diana would have done a 360-degree spin. Did the shots get mixed up in editing? Did the director get confused about where she had to turn? Either way, it's jarring when you notice it, but Diana gets the sniper in the end, even if it takes her awhile to find him.

4 CLARK KENT'S OBITUARY (BATMAN V SUPERMAN)

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After Superman's death in Batman v Superman: Dawn of Justice, Perry White opens up a fresh copy of the newspaper with Superman's death on the front cover. Ignoring that story, he opens it to the center page with Clark Kent's obituary.

Putting aside the fact that someone has got to have flipped through that paper and realized that Superman (who just died) looks exactly like this Daily Planet reporter (who also just died), Clark's obituary is strangely long, taking up almost as much space as the story on Lex Luther's arrest in connection with destroying the city. As it turns out though, if you look closely at Clark's obituary, his co-workers really didn't have much to say about him, as the same few paragraphs repeat over and over throughout the article.

3 STEVE'S ZIPPER (WONDER WOMAN)

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In Wonder Woman, when Steve is getting dressed after bathing in the pool in Themyscira, he zips up the fly on his pants while talking to Diana. Wonder Woman is set during the first World War, which took place between 1914 and 1918.

The zipper on clothing did not come into use until 1925, and was not common until the 1930s as people thought it was an inferior design. It would be more likely that Steve would have to do up a series of buttons on his pants, but modern audiences probably would have found it a bit too odd to see button fly jeans as they're now more associated with their resurgence in the '90s, but they go back way, way further than that.

2 EARTH HAS TWO SUNS? (MAN OF STEEL)

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Near the end of Man of Steel, when Zod releases the World Engine to terraform the Earth, there are two separate machines that hover on opposite ends of the Earth. The first one is located just above Metropolis (conveniently for Superman), and the other is located somewhere in the middle of the Indian Ocean.

What doesn't make sense is that it is clearly daytime during Metropolis, and at the exact same time the Sun is either rising or setting where the other World Engine is in the Indian Ocean. Somehow, the Sun is shining on opposite ends of the world at the same time, which anyone with a third-grade education will tell you is impossible, but showing the World Engine over a pitch dark ocean would have looked way less cool.

1 BAY STREET STATION (SUICIDE SQUAD)

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In Suicide Squad, when the team goes into the subway, the internal signs initially identify it as "Central" station, but when the team gets to the exterior entrance, the sign above them identifies it as "Bay Street" Station. Bay Street Station is actually a real train station in Toronto that is frequently used for movie shoots because it has a complete lower platform that has been out of service for decades.

It's odd that the director would go through the effort of putting up fake signs to indicate that they're in "Central" Station, only to display the actual Bay Street Station signs in full view in other shots. It's not like they were innocuously displayed in the background. It was literally displayed right above the entire team's heads.

Did you catch any other flubs in  DCEU films? If so, let us know in the comments!