If you are planning to throw the Mavic Mini in a backpack for a long haul, be aware that the controller adds another 249 grams and is roughly the same size as the drone. The total package comes in at about 1 pound, plus any case you use.
That's impressively small for a device that features enough battery power to stay aloft for about 26 minutes in my testing. Wind and temperature will be factors in how long you can fly, and most of my testing was done in temperatures ranging from 35 to 60 degrees, which might be why I got a little less life than the 30 minutes DJI claims (lithium batteries do not like cold weather).
Yet the Mavic Mini is one of the best drone flying experiences I've had. It's nimble and responsive. DJI's new Fly app isn't quite as nice as what you get with the company's other drones, but it works well enough. My only gripe is that switching flight modes—between Regular, Sport, and a new one dubbed Cinesmooth—is not a switch on the controller as it is with other models in the Mavic line. Instead, you'll have to hunt it down in the app.
As you would expect, the Mavic Mini is so light that I do not recommend using it in windy conditions. That said, it was surprisingly stable the one breezy day I did test it. There was very little side-to-side movement, even with gusts; what movement there was tended to be vertical—gusts would push it up.
My other concern flying the Mini was its size. It can reach 1,600 feet vertically and can range 2.5 miles from you, which is a bit tighter than DJI's other drones, but that's still plenty far enough to lose sight of it because it's so small. Line of sight is the only safe way to fly in my opinion. Relying on first-person-view video is a great way to lose your drone. The Mini is so small that I would look down to frame a shot on my phone, then look back up and not be able to find the drone.
I should also point out that technically you don't need to use your phone to fly. You can fly the Mavic Mini through the controller solely by line of sight. I did this a few times, and losing sight in this scenario was nerve-racking.
Below the tiny frame is a 24mm lens with a fixed f/2.8 aperture. The CMOS image sensor is capable of 12-megapixel still images (JPEG only, unfortunately) and video at 2.7K/30p and 1080/30p. The results are impressive, especially considering the size of the package. Yes, there's no 4K video or RAW still capture, but this is a machine of compromises.
What's Missing
The Mavic Mini is tiny, light, and relatively cheap, which means there are some trade-offs to be made on features. This is not a Mavic, certainly not a Mavic Pro, not even a Mavic Air. It uses USB-A for charging instead of the more modern and more versatile USB-C, for example. Still, you get quite a lot of cinematic and flying power.
The big drawback and main reason many videographers will probably skip the Mini is the lack of 4K video. It's not that the 2.7K video from the Mavic Mini is bad, but mixing it with 4K footage isn't going to work out well. That means if any footage in your project is 4K, you'll want your drone footage to be 4K. For that, DJI has several answers: The Mavic, Mavic Pro, and Mavic Air.