Glossary: Jump Cut
Shot transition between two shots of the same subject that are so similar in camera distance and/or angle that the image appears to 'jump' on the screen. Classical continuity editing avoids such jumps by generous use of shot/reverse-shots and by the 30° rule (advising that every camera position be varied by at least 30° from the previous one).
From Rear Window
Frame 1: Delivery man walks in alley (position 1) Frame 2: Delivery man walks in alley (position 2)
From 2001: A Space Odyssey
Frame 1: Floyd speaks with the Russian scientists (position 1) Frame 2: Floyd speaks with the Russian scientists (position 2)