During the serving scene Frenzel fires his gun ordering everyone back to work, and Sasha mops his face which is dripping with water. But beforehand, when Sasha glared at Frenzel who was pointing his gun at this head, his face was dry.
When Sasha moves in to help the man dishing out food who was beaten, an SS officer points a luger at him but in the next scene when he fires in the air and tells everyone to go to work he is holding a Walther P-38.
Shlomo Szmajzner actually had three "brothers" that he requested be kept with him (his real brother, his cousin, and his nephew).
In the film SS Officer Johann Niemann was killed in the shoemaker's workshop. This was not the case, he was actually killed in the tailor's workshop and was the first officer to be killed.
It makes no sense for German soldiers to stand guard on the roofs of the cattle wagons on the train that arrives with new death camp inmates. They would have to have been there on top of those cars at least since last train stop since there is no crew car on the train and no way to get from one cattle wagon to the next. They would have been exposed and even more uncomfortable than the prisoners within.
The whole purpose of the death camp "showers" was to deceive the victims, in order to keep them calm. The scene where the screams from inside the building can be heard on the outside, while other victims are walking towards the building, a boy tries to flee and another boy watches in terror from a distance, makes no sense.
At the beginning of the movie, three men try to escape by cutting through the fence, but all are killed during the attempt. Later on at roll call, their bodies are brought out for display as a warning to others not to try any escape attempts. During the close-up up the men's bodies, the man on the top is breathing, and you can see his chest rising and falling throughout the scene.
During the run through the minefield, one "mine" goes off without anyone touching it, revealing it to be a remote-detonated charge.
At the beginning of the film when the two prisoners are trying to cut through the wire fence to escape into the minefield you can clearly see the marked point on the fence indicating to the actor where to cut with the shears.
At 1:12;42 a white camera can be clearly seen behind the Russian soldiers.
When a couple dead bodies are wheeled on over and unveiled to the prisoners, the camera's shadow can be seen on one of the soldiers to the left.
In the death shower scene where a large number of naked women were led to the chambers, one of them could be seen keeping her bra and panties on.
While it's an error that Wagner is referred to as Hauptscharführer Wagner, as he is in fact an Oberscharführer, his rank insignia is, contrary to common belief, correct. He was promoted to Company Major Sargent, or SS Sturmscharführer while he was in charge of the Ukrainians and other NCO's while in Sobibor. In the film, he should either be addressed as Sturmscharführer or more correctly simply Oberscharführer as this title could be held both by an Ober- and Hauptscharführer.
Erich Bauer is referred to as a Scharführer(Sargent) but wears the insignia of an Oberscharführer with the shoulder insignia of a Hauptscharführer. In fact he was an Oberscharführar while at Sobibor, so he should wear the shoulder insignia of a such and refer to himself as a such.