With the recent VR announcements at Facebook's F8 conference, things are certainly getting a lot more interesting in the 360 content space, especially with the new hardware that can shoot in six degrees of freedom for an unprecedented level of immersion. However, the current wave of professional-grade 360 cameras are still cost-prohibitive for many studios, with the Nokia Ozo asking for $40,000 and the original Facebook Surround reference design costing about $30,000 to build. This is where Insta360 comes in with its $3,499 8K VR camera, the Pro, which is now open for pre-orders ahead of tomorrow's NAB Show in Las Vegas.