Depth of field is probably one of the most difficult fundamentals to master in photography. Amateur also likes to chase after shallow DoF.
So what really is DoF? Depth of field is the zone within a photograph which is in focus or is sharp.
So why are people obsessed with DoF?
DoF is the very first thing that an amateur photographer can easily achieve to impress anyone. And also DoF is mostly equipment dependant and not everyone has access to these equipment.