The Action 4 is a great vlogging camera. Small, sharp, dead easy to use, and results need very little doing to them.
This quick vlog was taken in totally auto settings, so I allowed the camera to choose what it wanted to do. Lighting was harsh.
I used a Sennheiser lavalier straight into the camera and very little was touched in post. This is how it came out of the camera.
So far, after feeling let down by the Action 3, I feel that the Action 4 is a great little camera. Well worth adding to my arsenal of cameras. It's like a 3 with pep pills.