without editing everything you watched would be boring, repetitive and way too long.
editing helps construct the narrative, we are so used to editing we barely even recognize it. editing can be used to condense long, boring activities into quick bursts of visual information. The simplest edits is the "cut" - in old fashioned films together filmmaking, when the editor put films together they would put the best bits one after another
In the assassination North by North west between Roger Thornhill getting out of the taxi and looking out the window out at the United Nations Building the are 26 cuts and most frequent during the conversation to see the reactions on the actors faces. .
The pace of the editing can be used to create excitement and tension for example in the shower scene of psycho and when Marion dies the pace goes down as if her life is leaving her.
apart from the cuts, there are some more visual interesting transitions:
dissolve- one scene dissolves into another, overlapping for a moment
- fade in/fade out- one scene fades out to black completely, then the other fades in.
- wipes- one scene wipes across the screen, revealing or replacing the next one. this can happen in any direction
- iris- the next scene replaces the last by appearing from the centre like the iris of an eye
- jump clouds- two scenes that feature a common element right after one another, so something stys the same but the rest changes this is used for disorienting or comedy affects