When it was released in late 2016, the DJI Mavic Pro created a new standard for portable drones. It captures good 4K video and provides top-notch flight performance, yet folds down into a package about the size of a 1-liter water bottle. If you want your video to look truly professional you'll need to upgrade to one of the Phantom 4 Pro models, and if you're looking to maximize portability in a drone with a slightly better camera then the Mavic Air is a lighter and more affordable option. The Mavic Pro delivers a balance between performance and portability in addition to features like following and autonomous flight modes.
Because the two drones overlap in many applications it can be very difficult to decide which one is the best for your purposes. In general, we think that they both work well for most of the same applications, namely travel and situations where you need to carry your drone in a backpack. The Mavic Pro has an edge in terms of flight performance and range. With a battery life of 27 minutes, it will stay in the air for 6 minutes longer than the Air. It also has a 4.35-mile transmission range that is almost 2 miles longer than that of the Air. The Air's camera is a bit better but has a less forgiving gimbal.