Film is a Choice of Medium; Not a Hipster Aesthetic

Film is a Choice of Medium; Not a Hipster Aesthetic: A photographer's choice of film over digital has to do with the fact that they're two different mediums.

"On the other, the mindset behind film requires you to be incredibly more discerning."

"If a person chooses that format, they often do it for the experience in the same way that one uses a Zeiss lens over an autofocus lens–the manual focus experience forces you to put a greater emphasis on what you’re doing, concentrate harder and pay attention to details that otherwise could easily be neglected with digital. Again though, it has to do with the process."

Medium Format Cameras

What are reasons to use medium format cameras?

Main reason is the size of the image capturing medium which is either a CCD/CMOS sensor or classic film.
The result is both high resolution with low noise in the image and greater dynamic range with much better transitional tonal values in color.
Both is driven by the larger format compared to 35mm (3-4 times the size) or even crop sensor formats when talking of digital.

Watch the documentary from Karl Taylor explaining the medium format advantages.