Considering Camera and lens flare, the normal 7 stop range is reduced to 6 stops. So taking reading on any where is "assumed" to be 5 stops by the meter.
With that, reducing a stop for shadows when reading is based on shadow(meter placement is critical) and opening one stop for highlight with bring it to an effective six stops.
Roll film(Negative): I personally have good shadow detail.
Again, testing and placement of meter are essential and critical.