The original DJI Osmo put the power of a studio steadicam rig in the palm of our hand. It's incredible for the price but it didn't have the highest quality camera. The X5 changes that.
The X5 is a micro four thirds camera that has a built-in electronic gimbal for stabilization. This camera was created to be mounted on the new DJI Inspire One Pro. The DJI Osmo X5 adapter allows you to place this new camera/gimbal on the original Osmo handle. which allows you to get the same super stable footage in an extremely small package, but takes the quality to the next level.
To control the camera and view your footage you will also need a smartphone. This is convenient in the sense that you can have an extremely large screen with wireless control, but it can also be a bit cumbersome to manage both units rather than one. The X5 comes with a 15mm f/1.7 lens, which is equivalent to around 30mm on a 35mm full frame camera. This angle is perfect for every day moving shots. It's not so wide that it distorts everything and it's not too telephoto either.
The major flaw with the X5/Osmo system appears to be the auto focus. Although I don't really want a camera to automatically change focus as I walk around, I do need to be able to set the focus quickly. As this video shows, focusing with the iPhone can be quite difficult and because it has a larger sensor and aperture, the shallow depth of field makes things even harder.
Even still, I'm excited to try this out. I'm currently using my iPhone 6s and a Z1-Smooth gimbal and it works amazingly well as long as you have enough light. Even though I'm quite happy with this system, I'm always excited to find the next best thing.