The newly announced DJI Spark Selfie Micro-drone is a thing of beauty when it comes to capability vs size. At just $499 it is also half the price of a DJI Mavic Pro and while it lacks a 3 axis gimbal and extended flight time; this is geared to the people that want a no nonsense experience that is truly portable for their flight camera needs. It has a camera capable of 1080p video of pretty good quality at 30fps.
The downside is that it lacks 4k for one thing and any other frame rates besides 30fps full HD. It does do 12MP still images with good dynamic range and color accuracy which could become the best use of the drone for markets such as real estate, surveying and aerial imaging that is ready at any moment without the bulk.