this depends on ppl but generally those that allows u to fix
different lens (mostly DSLRs), allows u to set aperture priority,
metering, manual focusing etc are professional cameras.
the rest are under consumer, especially those with built-in lens
and compact sizes, but recently there are more cameras that comes
with features that can result in pictures as good as a DSLR for
most day-to-day situations so earning them a prosumer category.
