In this FAQ follow-up, I’m answering the questions I keep getting about the DJI Osmo Nano vs Insta360 GO 3S vs Insta360 GO Ultra—because specs are one thing, but what matters is how these tiny cameras behave when you actually use them. I break down the practical stuff: battery life comparisons, overheating behavior, how you get footage off each camera, and whether features like horizon lock are actually usable in the real world. I also do a low-light re-test and talk about how these newer options stack up against an older favorite, the DJI Osmo Action 2. I also spend a big chunk of time on audio—specifically Bluetooth mic support and which external mics play nicely with the Nano versus the Insta360 options. And quick housekeeping: there’s a correction on my GO 3S test settings (those were done at 4K30, 2.7K50, and 1080p120). If you’re trying to decide which one to buy for travel, POV clips, or creator B-roll without surprises, this video is basically the “here’s what you actually need to know” version.