The 1/2.3-inch CMOS sensor is now capable of 12-megapixel images and video up to 4K at 30 frames per second, both of which look great. That's a step up from the Mavic Mini, which was limited to 2.7K video.
There's also now support for DJI's smart panorama modes like sphere, a 180-degree view, and wide-angle, and my favorite feature, Trimmed Download. It lets you split clips before transferring them to your phone for editing. I don't use the DJI Fly app for editing very often, but when I do it's almost always for short clips I want to share quickly. Trimmed Download is perfect for that, saving time and storage space on your phone.
Along with the higher quality video capture, the Mini 2 includes OcuSync 2.0, DJI's improved video transmitting technology. OcuSync is DJI's marketing name for a smart automatic-frequency-switching tool. It means you get better video quality over greater distances. The Mini 2 can transmit very clear video from up to around 6 miles, according to DJI. Suffice to say you can fly the Mini 2 well beyond visual range—which, friendly reminder, you should never do—and still get a video feed.
The question to answer here is, should you get this or the more expensive Mavic Air? There are three compelling features to the Air, for beginners especially. The big one is obstacle avoidance—the Mini 2 has none. This might be the biggest reason to spend extra money on the Air. The Mini 2 also lacks DJI's ActiveTrack and Point of Interest automated flight modes, which really do help you capture better video with less fuss. The larger camera sensor in the Air also means you can get sharper 48-megapixel images and 4K video at 60 frames per second.
That said, if you have some experience flying, don't need the improved video resolution, and just want a highly portable, really-fun-to-fly drone, the Mini 2 is my top pick.
Correction January 17: An earlier version of this review said that the camera sensor was new and the controller was unchanged. In fact the sensor is unchanged and the controller is new. We regret the error.