After drinking poison the Pharaoh Akhnaton sprawls dead on his throne. As Sinuhe and Horemheb continue talking Akhnaton (Michael Wilding) can clearing be seen breathing.
When Bakatamon is talking to Sinuhe about killing Akhnaton, she takes her second glass of beer, and her cloak end is in her right hand. As she walks to her chair, the cloak end is not in her hand, but as the camera cuts to her at the chair, it is in her hand, without her picking it up.
Akhnaton was succeeded by Tutankhamen, not Horemheb. Horemheb succeeded Aye, who was the successor of Tutankhamen.
The real Sinuhe was a courtier of Amenemhat I, not Akhnaton.
The mirror Baketamon uses to show Sinuhe his resemblance to his father is obviously made of glass. Mirrors in Egypt around this time period were made of polished copper. Glass mirrors were not made until around the first century AD.
When the guards holding torches leave the tomb, most of the light, naturally, goes out of the room. However, it is a closed-off tomb. There should be absolutely no light left after they leave, yet we can still clearly see across the room without difficulty.
When Akhenaten is murdered because he refuses to take arms against invaders , he's in front of a painting of himself wearing the blue crown of war called a khepresh. Akhenaten was not opposed to war; there are at least three surviving portraits that depict Akhenaten with the blue crown of war.
Sinuhe gives Horemheb a Hittite sword made of iron as proof the Hittites have the superior military technology. However, iron was well-known to the Egyptians already, as evidenced by an iron dagger found in the tomb of Tutankhamun ("King Tut"), the son of Akhenaten. However, Tutankhamen's iron dagger was formed from meteoric iron, the Egyptians had no native iron smelting and production. Egyptian weapons were made of bronze, as depicted in the film. Tutankhamen's dagger was considered a rare gift from the gods, more precious than gold, which is why it was buried on his body. So The Hittites having common iron weapons would have been, and was, a revolutionary technology.
When Nefer is changing her clothes and her "nude" reflection is seen in the water, she is clearly wearing flesh-colored underwear.
Shortly before Sinuhe attempts to drown/strangle Nefer, she turns her back on him (and the audience). The zipper on the back of her gown is clearly visible.
The outline of the thick back padding to protect the actor victims of the archers is plainly visible in the civil conflict scenes.
On the first aerial overview of the Sun Temple, every building has the same top/roof upon the building - however later in the temple massacre, the building holding the image of the sun has no top upon the building. The camera was surely meant to be kept below this line.
At beginning Sinuhe write on papyrus letter from right to left, somewhere in middle Keptah read final father of Sinuhe words from left to right.
In the scene where Sinuhe buries his parents with the help of the grave robber, they both use a shovel with a metal blade, not wood. Later on in the movie, iron is introduced to the Egyptians.
Sinuhe uses a modern-day spade to bury his parents.
The pharaoh is often addressed as Majesty. The first monarch who had that title was King Charles I of Spain, who was also Emperor Charles V of the Holy Roman Empire, and who reigned in the 16th century of the Christian Era.