Are you serious?
The shallow depth of field is very overrated in my opinion. The only thing it provides is an easy way to separate your object from the background. If used in wide angles, it actually seems really misplaced at times. So it's mainly important for closeups.
And you can achieve background separation by lots of other means. It starts with lighting and certainly doesn't end with the contrast between an actor's clothes and the wall behind him.
If you shoot outside, it will even be less important since the background is further away anyways and even professional filmmakers will close their aperture down to avoid overexposure (you know, with film, you can't just adjust the ISO on the fly...).
So, what I wanted to say: Almost everything (sound, lighting, framing, camera motion, and especially the story!!!) is more important than shallow depth of field to make a good movie.