HoloLens vs. Mixed Reality headsets: The little differences
HoloLens and Mixed Reality headsets share the same Mixed Reality platform, but outside of the obvious AR/VR differences, there are some notable differences worth noting.

Over the last week or so, I've been playing with the Microsoft HoloLens and a new Mixed Reality headset from HP. Both the HoloLens and Mixed Reality headsets are part of the same "Mixed Reality" platform, but there are plenty of differences as well as similarities to be aware of.
Of course, the most significant difference is the distinction between AR and VR. HoloLens is an AR headset, whereas all the new Mixed Reality headsets are VR. Instead of exploring those differences, I wanted to =take a look at the smaller differences.
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The field of view
How wide of a image you get in a headset is a big deal for an immersive experience. The Mixed Reality headsets have a field of view starting at about 95 degrees, with some headsets offering a slightly wider view (a wider field of view fills up more of your vision and gives you a more immersive experience).
95 degrees is pretty good for a VR headset, but if your eyes wander from the center you will see the edges of the displays. Since it's just darkness beyond there, it feels like you're looking out through a tunnel. If you cup your hands around the outside of your eyes you'll get an approximation of the view.
The HoloLens is a slightly different beast. Its transparent display allows for digital objects to be overlayed on top of the real world, instead of placed inside a virtual world like on the Mixed Reality headsets. You might think such an experience would be even more immersive, as you can see everything around you as well as the 3D apps and games you're using. That's not exactly the case.
The problem is the HoloLens' limited field of view — about 30 degrees (move those cupped hands out a few inches). The frame in which you'll see holograms, apps, and games rendered is downright tiny compared to the immersive experience of a Mixed Reality headset.
The image above is the best I can do in trying to simulate what it's like looking through a HoloLens. Inside the black box is where holograms show up, and while you can still see outside the black box, holograms do not show up there unless you move your head.
The result of the field of view difference between HoloLens and Mixed Reality headsets makes the HoloLens feel claustrophobic to use. It feels like I'm looking through a tiny window, even though I can see the real world around me. A Mixed Reality headset feels like looking through a much bigger window, and as such, is an overall better experience.
There are other differences too, for example, HoloLens doesn't support any of the new Mixed Reality controllers that debuted this month, at least not yet. In theory, HoloLens has all the sensors needed to support the Mixed Reality controllers, but since HoloLens is still stuck on the Redstone 1 version of Windows 10, it lacks that support.
Different versions of Windows 10
Speaking of Redstone 1, yes the HoloLens is stuck on a version of Windows 10 from 2016. It's running the Anniversary Update and hasn't received any official Windows 10 release since. Microsoft says it is working on an update for release early next year, which we're hoping will bring HoloLens up to software parity with the new Mixed Reality headsets.
Developers who wish to build apps for both HoloLens and Mixed Reality headsets can't do so because of the difference in APIs between the Anniversary Update and Fall Creators Update. The Mixed Reality platform on the Fall Creators Update is far more baked, with more features and APIs for developers to mess with. HoloLens needs to catch up.
Finally, the actual immersive experience is obviously different. Mixed Reality headsets use something called Cliff House, where the user can open apps and games in Mixed Reality. On the HoloLens, this same experience happens inside your own, real environment, since the headset is an AR one.
Because of this, when using a HoloLens, you must physically move around the room to make use of your immersive experience. Mixed Reality headset users can't do this, and instead, have to teleport around the virtual environment.
Now, there are some similarities between the HoloLens and Mixed Reality experiences too. For example, both can be controlled via voice. Hey Cortana works, along with all the commands you need to pin, move, open, close and interact with apps. The biggest similarity between the devices, however, is the UI. It's the same.
The Mixed Reality Start menu, along with the behavior of apps and games being pinned to walls and surfaces works the same across devices. It's identical, which is great. All the Windows 10 apps that weren't built specifically for HoloLens work just as you'd expect on Mixed Reality headsets.
One unfortunate difference for me between the HoloLens and Mixed Reality headsets, however, is app support. Apps built for HoloLens natively don't work on Mixed Reality headsets without work. This means any developer building for HoloLens needs to do a bit of extra work to get that same app working on Mixed Reality headsets.
I was originally hoping that HoloLens apps would "just work" on Mixed Reality headsets in the Cliff House, which essentially simulates a real environment for you, but apparently, that's not the case. Perhaps that'll be something that works in the future.
Overall, there are several similarities and differences to consider when comparing the HoloLens and Mixed Reality headsets. But the most significant difference, at least right now, is the market in which these devices are targetted. HoloLens is not aimed at the same market as Mixed Reality headsets, at least not yet.
HoloLens is still very much a developer or enterprise tool and has zero consumer play at this time. Mixed Reality headsets, on the other hand, are more consumer orientated, and are far more affordable.
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Zac Bowden is a Senior Editor at Windows Central. Bringing you exclusive coverage into the world of Windows on PCs, tablets, phones, and more. Also an avid collector of rare Microsoft prototype devices! Keep in touch on Twitter: @zacbowden.
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Why is Microsoft letting hololens lag behind?
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Maybe the HoloLens software team has been focused on the VR side of things, you're essentially building a VR OS in this case, that's not a easy task. It's not really much of a big deal since we will see HoloLens move to RS4 just like everybody else. Microsoft of course is continuing to build HoloLens V2 which will released in 2019 and Apple's solution in 2020, Microsoft is no doubt going to make this OS free and will likely court OEMs.
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1) No competition 2) Internal hardware is limited( 2+1 GB ram, cherry trail CPU and first generation HPU, 64 GB storage) Hololens is not laging, every aspect of Hololens is in development. It needs other feature as a holographic platform. Giving out fall creators update is not necessary at all unless it's core Holographic platform features are not ready;")
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Beacuse microsoft....thats why!
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Nice write up Zac. I do see in the near future we will AR and VR finally merge, where Windows Mixed Reality headsets and HoloLens V2 in the future will be able to run VR and AR games. This of course will apply to Windows MR on Console, PC and Andromeda. I don't except VR headsets to work with HoloLens software. I expect HoloLens -like hardware be it tethered or standalone replace the current VR headsets.
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Hololens apps already work with WMR Headsets. Developers haven't implemented it yet;")
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MS BAU: develops something, sells it as is main stream product, and then - after a couple of years - let the users down....yes, that is MS.
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Except HoloLens isn't a mainstream product whatsoever.
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Since moving around with HoloLens is part of the experience that says that for people in fields such as medicine or other such concepts will be able to actually move to get the feel for what they are working on instead of just moving something through a controller. Both have a part to play in those fields but sometimes actually being able to move with what you are trying to do gives you a much more accurate feel for the real thing. Consumers won't have much practical use for something like this but military applications come to mind and that would definitely mean something much more necessary in need.
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Well HoloLens has two bigger challenges, the first is increasing the field of view, the second is being wireless. It is a much more ambitious device, and it is more difficult to implement apps for it as it requires an interaction between the real environment and the virtual one, which a VR headset ignores. Still, if they manage to solve the issues it could be so cool to use it for education and work, with some foray into gaming for stuff like Pokemon go or similar.
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According to MS, Hololens is also a mixed reality headset! The confusion is real af! Gladly I have figured it out. So no confusions for me;")
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Zac, nice article, short and to the point. But one part is a bit confusing: "The biggest difference between the devices, however, is the UI. It's the same." Um... Huh?
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Fixed, should have said "similarity" :)