Research Into ambient sound recording

Ambient sound is the sound you hear in the background of a film that has no real meaning apart from to add depth to the scene, like wind, footsteps and anything else that actors in set could also hear, ambient sound is important because without it a scene would just feel like a set and not have the same level of realism you would expect, because no matter where you are there's always ambient sound, and these sounds build a picture of the surroundings, this is why ambient sound is often recorded on set rather than using a sound bank, the sounds are already guaranteed to fit the set because you're on set, a sound from a bank however won't sound as good or change the mood or stand out as different too much

In ambient sound hard cuts are not used in the mixing of the sound as ambient sound is supposed to be natural and sound like its supposed to be there, if there are sudden stops and starts can distract the viewer too much and not provide the effect that they want

Location shooting can be very bad for recording dialog because you might get ambient sound that you don't want in the clips, for example you want to be able to add ambient sound after the recording of the dialog so any ambient sounds in the dialog will clash.