When Thaddeus Bradley is explaining to Dylan Rhodes and Alma Dray how he began his career exposing magicians, the camera cuts to Rhodes twice. However, both cuts are exactly the same. All three characters are seated at a table. At different points during the scene, two ladies are seen passing each other on a set of stairs just behind Rhodes' as he tilts his head to listen more intently to Bradley's story. The same cut is used twice.
In the introduction to the New Orleans show, Isla Fisher (Henley Reeves) is in slacks; a few seconds later when performing the rabbit trick she's in a skirt; a moment thereafter when Jesse Eisenberg (J. Daniel Atlas) produces the soap bubbles and she floats away in one she's in slacks; the next time she's seen on stage after the bubble bursts she's back in the skirt.
When Thaddeus comes to wish everyone good luck, Merritt stands to do a quick reading on Thaddeus. You can see Jack in the background changing his position. Switching the camera to Thaddeus and back to Merritt, you see Jack change his position again.
Near the beginning of the movie Thaddeus says that Lionel Shrike died in his steel safe in the East River. However the newspaper article towards the end of the movie says that Shrike died in the Hudson River.
(at around 1hr 23mins) Projections are made onto the side of a building. This is onto walls heavily covered with graffiti, and lots of windows. Yet the projections appear as if they are onto a clean white surface, not the actual walls and windows.