Less than a year after launching the Action 3, DJI has unveiled the Osmo Action 4 with an improved camera that makes it better in low light. It now packs a larger 1/1.3-inch sensor (the same one on the Mavic 3 Pro, the Mini 3 Pro and Air 3 drones), compared to a 1/1.7-inch sensor on the previous model and the 1/1.9-inch sensor found on the GoPro Hero 11. It also introduces D-Log M, improving dynamic range significantly over the Action 3.