During its press briefing at E3 2015, Microsoft showed off a demo of the HoloLens with a special camera that let us see the world of Minecraft playing out on a table in 3D. Even for the most cynical folks on the Internet, it was hard not to be impressed. Sure, the demo-er looked ridiculous pulling and twisting at his table when the non-HoloLens view was shown, but when we could see what he was seeing, it was awesome.
But we weren’t actually seeing what he was seeing, because for those viewing at home, our entire screen was filled with the HoloLens projection. However, in reality the projection only appears in a fairly small box directly in front of the user’s eyes. As our own Matt Smith puts it from his time with the device–
The biggest disappointment is the field of view. What’s not obvious in Microsoft’s demos is that holograms only appear in a box directly before you. Its size is difficult to describe, but it seemed to consume about two-thirds my field of view.
Understanding this limitation is difficult with imagination alone, but when you see the video it starts to make a bit more sense. Shots showing a simulated version of the FOV are fairly few in this new clip, which shows how HoloLens technology is being used at Case Western Reserve University for medical students, but you’ll find them at 0:49, 0:58, 1:23, 1:37, and 1:42 in the video.
