Here's another set of video clips uploaded in 4K resolution. Still the same setup with the cheap ND filter, but this time I changed the Shadow/Highlight curve to Shadows +2 and Highlights -5. In this setting I was able to retain more information in the sky and capture some clouds while grabbing much of the information in the shaded areas.
Sorry if the 'stylistic' colors don't appeal to you, I threw a generic color grade over everything. Besides having to carry an ND Filter, I never felt like I was missing something or even felt like I needed an additional lens. With the F/1.7 lens I was able to capture footage at night or indoors, but can only imagine how much more I can do if I carried a small LED light. The zoom is decent for a pocketable camera, but if your final video output is 1080p, you can always crop a bit further into the 4K video.
As small as it is, a fully charged battery will run you several hours. A 64GB SDXC card can capture about 1.5 hours of 4K Video. The image stabilization worked very well hand held, but of course will be more stable if you had some type of pistol grip or small monopod. It's extremely discreet so nobody really cared what I was doing. I have only used the camera for a few days, but of all the compact cameras I have used, this is by far the best 'travel compact camera' for both photos and videos I have ever used.
I'm definitely going to sell all of my Sony RX100 cameras (I have three). There's just no way I could go back to the RX100 after using this camera. The photos may not be as good as what comes from my Fuji X100s, but it's good enough that I am considering selling that off as well. I highly recommend this camera for anyone looking to get a sweet all-in-one travel compact system.