Continuity mistake: When Wonka is leading the group down the stairs into his factory, Veruca's right arm changes position from her hand on the bannister to her entire forearm resting on it.
Continuity mistake: A tree suddenly appears behind Grandpa Joe, Charlie, and the Beauregard's that wasn't there before, as they rise to see Wonka emerge from his factory.
Revealing mistake: When Violet turns blue, in any shot facing her back you can see the blue light source used at the very left of the frame (widescreen only). (01:12:24)
Visible crew/equipment: There is a cameraman shooting near the gate of Wonka's factory: he is strategically placed to get up close shots shown in the movie yet he blends in to the crowd to make the movie audience think he is one of the many media technicians filming the event of Wonka opening his factory. Later, when the guests are passing through the gate, the cameraman has disappeared.
Visible crew/equipment: In the invention room, Veruca's dad talks to Wonka. The camera gets close to them. On the bottom of the frame is either a shadow of the camera or the boom mic.
Continuity mistake: When WIlly Wonka is talking to Mrs Teevee about Loompaland (at the "Mr Wonka I am a teacher of Geography", "Oh good then you'll know all about it" part), the rear shot of Mrs Teevee shows Mr Beauregarde proceed to eat a giant sweet of some sort. But in the next shot he has the sweet at waist height.
Continuity mistake: After Wonka tells Mr. Salt a waterfall mixing chocolate gets it just right, both men are very close together, but the next shot of them shows Salt further away from Wonka than before.
Continuity mistake: In the scene after Charlie brings home the loaf of bread, his mom moves in front of the television set near Grandparents George and Georgina, but the closeup of George and Georgina shows Charlie's mom nowhere near the TV set.
Continuity mistake: When Wonka enters the shrinking corridor, he pauses in front of the wooden door, to the right of the viewer but the next shot shows him further to the left.
Continuity mistake: When Charlie gives his pay to his mom, Grandparents George and Georgina are asleep but their head still change from lying at an angle to straight as the shots change.
Revealing mistake: As Veruca sings "I want it now" in the egg room, the plastic seams on a few of the golden eggs are quite visible, along with their 'dimpling' near the tops and bottoms, as the Oompa Loopmas pass them around for polishing.
Continuity mistake: Outside the Inventing Room, Veruca and her father stand about a foot apart from each other, but the next quick shot shows Veruca standing in front of her dad's left arm.
Continuity mistake: When Augustus falls into the chocolate river, Wonka's right hand is resting on the top of his cane, which is planted in the ground, but the next shot shows his right arm up, and bent at the elbow.
Suggested correction: The Cameraman is part of the news crew that was filming the event all around. Not a mistake.
The point being is that the cameramen in the crowd are part of Director Mel Stuart's film crew, getting angles and footage of the crowd for the movie without hiring additional crews to get the same shots.
Scott215