Level
2nd
Casting Time
1 Action
Range/Area
60 ft
(15 ft )
Components
V, M *
Duration
Concentration
10 Minutes
School
Evocation
Attack/Save
None
Damage/Effect
Control
Magical darkness spreads from a point you choose within range to fill a 15-foot-radius sphere for the duration. The darkness spreads around corners. A creature with darkvision can't see through this darkness, and nonmagical light can't illuminate it.
If the point you choose is on an object you are holding or one that isn't being worn or carried, the darkness emanates from the object and moves with it. Completely covering the source of the darkness with an opaque object, such as a bowl or a helm, blocks the darkness.
If any of this spell's area overlaps with an area of light created by a spell of 2nd level or lower, the spell that created the light is dispelled.
* - (bat fur and a drop of pitch or piece of coal)
My view is that if you are inside a zone of darkness and someone else is outside of it 5 feet away, some part of you or your equipment has to cross those 5 feet to make a melee attack, and in doing so you become seen. Your view may be different and that's equally valid. A lot of 5e doesn't define things as precisely as I would like, and the vision and hiding rules are a mess TBH. For example by RAW see invisibility infamously doesn't negate the advantage or disadvantage given by the Invisible condition.
No, while they have a larger range of darkvision its still acts as a normal darkvision.