Visible crew/equipment: Camera shadow is cast over Jesus and other characters just before he is baptized by John The Baptist.
Revealing mistake: Willem Defoe plays Jesus in this film. He wears a robe that has been double seamed, and in several scenes when he turns around you can see the stitching where a label is sewn in.
Factual error: The film was wholly filmed in Morocco, where the scenery, architecture and geography is wholly different to Israel. All the extras are also Moroccans, who look wholly different and wear different clothing to people from Israel (and would have looked equally different in the first century AD). Many extras were members of the Berber community. Berbers have a long tradition of being tattooed, so many extras showed prominent tattoos. But Jews have a traditional aversion to being tattooed, as per Leviticus 19:28.