Crew or equipment visible: A member of crew is reflected in the car window when Lee first arrives at the office.
Continuity: Mr. Grey slams a letter on Lee's desk and he has circled the letter 'f' in the word 'knowledfe', which Lee has mistyped. When Mr. Grey brings Lee into his office and makes her bend over to read the mistyped letter she just placed on the desk, we see that the entire word is circled, not just the letter 'f,' as was seen before. Not only that, but the word circled in the letter Lee reads is "illuminatinh", rather than "knowledfe".
Crew or equipment visible: During the shot of Lee with the White Out bottles on the typewriter in the foreground, the reflection (inside the lens?) of the camera operator can be seen - an outline of a head with an arm turning the focus ring.
Revealing mistakes: When Lee goes to Mr. Grey's office to apply for a job, rain falls only in the foreground. Closer observation shows that the background location is reasonably dry and not being rained on.
Revealing mistakes: When Mr. Grey is typing his apology letter to Lee, his finger goes to hit the spacebar, but misses and he just continues typing.
Continuity: When Lee is being dried off by Mr. Grey, there are fewer scars and cuts on her torso than in the next shot, when he lays her on the bed.
Revealing mistakes: When Lee throws her case of cutting tools and bag of iodine from the bridge into the river we see both submerge, but the bag quickly pops back out of the water due to the air inside it. However, when the camera changes to the underwater view the bag is sinking to the bottom faster than the heavier case of cutting tools.
Factual errors: The car driven by Lee's mother shows a front license plate. Florida does not issue front license plates, only rear ones.
Factual errors: While Lee is gathering some mail, a close-up of an addressed letter shows the city as "Clairmont, FL". The actual spelling is "Clermont".
Audio/visual unsynchronized: The typewriter shown during the starting credits has a typeball, but it sounds like a manual or daisy wheel typewriter.
Continuity: When Lee picks up and puts down the mirror for practicing her job interview, her thumb is up. In all other views of her holding the mirror, her thumb is across the handle.
Boom mic visible: In the scene where Tricia O'Connor arrives and calls Lee submissive, a boom mic is clearly reflected in the window behind Lee, following her while she moves from left to right.
Revealing mistakes: In the first scene, Lee takes an assumedly freshly-typed letter directly from the typewriter with her mouth. But as she's walking down the hall toward E. Edward Grey's office, a circled error can be seen on the letter.
Factual errors: The misspelling of Clermont is also visible on the sign for Clairmont Community College, where Lee learns to type.
Continuity: In the title sequence we see extreme close-ups of the type ball of an automatic typewriter intercut with the black on white lettered titles. The implication is plain that the titles are being produced by the typewriter. Unfortunately it's also very plain that the typewriter is fitted with an old fashioned serifed font but the titles are produced in completely different very plain, clean modern unserifed font.