How to get that movie look?

I have brought this camera ( nikon d3100 ) and I don't know how to get that movie look in my videos. I know it depends on things like lightning etc so I want to know does it also depends on the lens. I have seen commercials recordings using such a cam. If yes I want to know what kind of a lens should I use ( kindly specify the lens size ) and thank you much in.

. I don't think many people in 'movies' category would know specifics about cameras, you should post your question in electronics/media - they'll know exactly what you want.
You could try edit the video, like enhance qualities in movie-makers stuff… Lol sorry I'm really bad with technical stuffs: s