Yes, the R is for RAW. It's a fair little camera. I have the standard X5, and fly it on an Inspire Pro UAV/drone. doesn't work well on the Osmo with any decent lens, however. very cool idea, but not very well executed. I wish it were easier to post pix here, you could see how it will burn out the Osmo.
Usually on any kind of a steadicam, I make it easy on myself and just shoot relatively wide and with a pretty deep depth of field. How would an Osmo X5 be with just a 20mm unstabilized Panasonic pancake lense?
I looked at the Osmo for some time, but on the DJI forum there were lots of issues being reported. At the same time, I did not need yet another camera, so I bought a Feiyu gimbal instead: http://www.feiyu-tech.com/products/30/
This device is significantly cheaper and uses a standard GoPro Hero 4 camera. My only issue with the GoPro was the fisheye distortion, so I plan to purchase a replacement Peau lens for it.
Maybe I should be looking more closely at the OSMO X3. It seems to me like the most practical way to use a gimbal stabilized camera would be pretty wide and with a small f-stop for deep depth of field. A GoPro, X3, or even my cellphone camera would probably be fine in that context.
Before I bought the Osmo X3 I was looking at some form of steadycam device on which to mount my x70, but having a dedicated steady cam like the Osmo was less then half the cost, and with its extension rod I can get shots from 3 meters high and also very close to the ground, both with the "viewfinder" (mobile phone via wifi)) at my end of the rod. Many other great features, and no "fisheye" effect, I love it.
If you're shooting 2.7k or 1080p rather than 4k, you can used your fingers on the mobile app to zoom in - technically digital rather than optical zoom, but still uses full size pixels..