In one scene, Ildrith says the invading army is 5 miles away. The mile wasn't a measurement in ancient Canaan, but may have been used because most movie viewers would know that distance rather than say the army is 17,00 cubits.
At a banquet scene, what looks like a roasted turkey is set on a table. Turkeys weren't indigenous to ancient Canaan.
Although the special effects for 1962 or fairly good, during the destruction of Sodom the giant blocks that fall to the ground bounce around like beach balls, and in several shots are kicked around by the panicked public like chunks of plastic foam.
(at around 1h 20 mins) During the overhead scene which shows the men riding horses toward battle, you can see vehicle tire tracks.
In banquet scene where he is sent to jail, Lot's wife is wearing a gown with a zipper.
During the battle scene, the saddle cloths slip and English saddles can plainly be seen. Obviously not in use during the time.