Ranging from "tech toys" to entry-level hobby aircraft, these are typically compact, and while many have cameras, they tend to lack gimbal stabilization, optimal for YouTube sharing and first-person view (FPV), as opposed to filmmaking. Not only for fun, they are also popular as trainer aircrafts.
This middle territory encompasses most of the aerial imaging-focused aircraft, especially quadcopters. Generally they are designed to carry a GoPro HERO or similar camera that can be mounted with 2- or 3-axis gimbals to provide stabilized results for a variety of professional video and photo applications.
Professional UAVs will include most hexa-rotors and virtually all octo-rotors and up, as well as some specialized planes and gliders. These are designed specifically to carry hefty payloads, such as DSLRs, mirrorless cameras, and even a growing number of compact cinema cameras for use primarily in video production.