Goofs

The men tailing Friar Tuck closely in a medium shot disappear in the cut to a long shot.

During the big battle scene, an outlaw tricks one soldier into stabbing another soldier by mistake. The victim falls down, despite the fact that he has clearly not been stabbed by the sword.

When Robin is talking to Marian (disguised as Martin) in the forest, she crosses her legs in one scene and in the next scene, her legs are uncrossed.

Woad (the purple dye Robin throws at the tax-collector) wouldn't have been around in the middle of the village. The process used to make the dye smelled so bad that woad-makers had to live outside the village to make it. Also, while in the cauldron it actually looks green, the indigo/purple colour only shows up as you remove the dyed item from the liquid, so the dye would not have appeared purple in the bowl before Robin threw it.

After stealing the taxes, Tuck says he can now afford swan's breast in Madeira. As Madeira wasn't discovered until 1419 (by the Portugese) he would have had difficulty.

When Robin and Will run off after Robin's "trial," Robin strikes flint to steel by a stack of wood. Instantly, flames shoot a foot high from the wood.

When the arrow shot from a longbow supposedly punches through a helmet on a post, there is a horizontal slit supposedly made by the arrowhead whereas the arrowhead on the arrow is shown to be vertical.

When Robin's men infiltrate the Castle to rescue Marian, they release a volley of arrows under the command "Shoot". The proper command for the archers would be "Loose!", as an arrow is let go rather than shot. "Shoot" is a modern command.

Much of the chainmail is actually cloth made to look like metal armor. This is particularly notable in close shots of camail (the chainmail covering the neck and attached to the bottom of a helmet).

When the outlaws storm the castle, the actor playing Will Scarlett drops his sword by accident, stops for a second to look at it, then draws his dagger to finish the scene.

When Robin and Will visit the house of villager tortured to death for being associated with them the dead man's stomach can clearly be seen moving as he breathes.

Early in the movie, Folcanet challenges Hode to appear before Daguerre "at seven in the morning". Before the invention of mechanical clocks to have more accurate and evenly divided hours, daytime and nighttime (irrespective of the season) were divided in twelve parts called hours. The sixth hour of the day was noon. In the 12th century, seven in the morning is therefore impossible.

Prince John keeps insisting on being called "Your Majesty" to indicate that he now considers himself to be king. The first instance of "Majesty" being used by the English monarchy is Richard II - almost 200 years later and it only became an official title around 1490.

While Folcanet is describing to Daguerre his first meeting with the Sherwood outlaws, he says that "the thugs surrounded him". However, the British would not encounter the Indian sect of Thuggee, from which the word derives, for another four or five centuries.

Robin makes reference to "cash". This term did not come into use until the end of the 1500s.

At the end of the film a man colored all in green looks up to the sky, his mouth open in wonder. Inside you can see his teeth fillings.

At two minutes in, just before the rabbit, a car can be seen driving in the distance.