Nokia’s new Lumia 920 may not be PureView as we’ve known it, but that doesn’t mean it’s not some darned clever camera technology all the same: think springs in your smartphone for a start. A new side-by-side video demo of the stabilization system in play – which you can see after the cut – shows another string of PureView’s catch-all camera bow, relying not on masses of megapixels but on how a more average sensor does its business.
The 808 PureView uses oversampling to construct incredibly detailed, accurate pictures. Each pixel of its roughly 5-megapixel final stills is made up of the combined data from seven pixels on the sensor itself: by averaging out the results, and discounting anything which is obviously an outlier, Nokia can create a more impressive image than you’d get from, say, a regular 5-megapixel (or even 8-megapixel) traditional camera-phone.
In contrast, the Lumia 920 has just that: a regular 8-megapixel sensor. What’s special is how it’s mounted, with what Nokia calls “floating lens” technology, putting it on a set of actual, physical springs inside the 10.7mm thick chassis. As you can see in the video below, the difference is marked: video is smoother, as if your Lumia 920 is mounted on a tiny Steadycam, while stills should show an improvement in low-light performance, as exposures can be longer without introducing blur from shaky hands.
Update: Nokia has admitted that the video demo it put together was not filmed with the Lumia 920, and that it was only intended to simulate what the OIS system could do. The second video, however, shows an actual side-by-side comparison filmed on the new smartphone.
Unfortunately, what it also means is that none of the 808 PureView’s other ambitious enhancements are present: you don’t get lossless zooming on the Lumia 920, and there’s no sign of Rich Recording for higher quality audio in video clips. Whether the market has heard enough about the 808 to know what they’re missing on the Lumia 920 is questionable, though.
Still, as Nokia’s imaging chief Damien Dinning said earlier in the week, there’s more to PureView than just big sensors. We’ve been waiting for Nokia to show us how it will differentiate its Windows Phones from those of other OEMs – in more ways than just software – for some time, and it’s good to see the Lumia 920 finally deliver on that promise.
Nokia is experimenting with graphene-based camera sensors, potentially smaller and cheaper than existing CCD and CMOS systems, that could allow future high-res PureView models to still fit in your pocket. Revealed by a freshly published patent application for “Sensing of Photons,” Nokia’s approach combines multiple layers of photo-sensing graphene that are stacked with color filters, each stack representing a single pixel.
Using three color filters – for red, green, and blue wavelengths – would allow the graphene sensor to build up a normal full-color pixel. It could also be more efficient in low-light than a CMOS approach, as used in current Nokia phones, as a single layer of graphene absorbs just 2.3-percent of passing light.
Meanwhile, the graphene-based system could be more sensitive to light than traditional camera sensors, reflecting light back out through the layers and so getting a second opportunity to register it. That could mean roughly twice the light detection efficiency, Nokia suggests.
The upshot, so the patent application insists, is a camera sensor that’s potentially easier and cheaper to manufacture, smaller and thinner than existing versions, and that also works well as a pre-amplifier for more traditional photocells. Stack the graphene sensor on top of one of those, it’s pointed out, and it will grab extra light/color data without blocking the majority of the light passing through.
Nokia’s PureView technology, as in the 808 PureView, has so far relied on an oversized sensor paired with high-quality optics and software trickery – most notably oversampling, where data from multiple adjacent pixels is combined to make for a more detailed and accurate end image – to work its magic. However, such oversized sensors aren’t particularly compatible with the compact smartphones in demand today; the new flagship Lumia 920 PureView expected to be announced this week is tipped to have a “mere” 8-megapixel sensor, though Nokia’s photography expert insists that doesn’t preclude it from delivering PureView-style magic.
If Nokia can refine and commercialize graphene sensors, however, that could mean big megapixel counts without big devices. Unfortunately there’s no indication of quite how far down the development process Nokia might be, so we’ll probably have to wait a while to see such devices reach the market.
Nokia’s photography expert has struck out at PureView criticisms, apparently taking to task those who doubt the rumored Lumia 920 PureView is eligible to bear the brand. Damian Dinning, who spent five years developing PureView, took to Twitter to give an impromptu lesson in the advanced camera technology and – though he was careful not to reference unannounced Lumias – why an 8-megapixel camera could still deliver PureView-class stills and video.
“As said many times before it’s NOT about the number of pixels but what you do with them” Dinning pointed out, going on to argue that “the future of photography will be about how you use pixels, optics and image processing together.”
Contrary to those suggesting that a PureView Lumia would need considerably more than 8-megapixels in order to qualify, Dinning described the tech as more of a hybridization of multiple factors. “PureView is about blending optics, pixels and image processing in new and different ways to allow you to do things you otherwise cannot” he explained, “NOT a single specific feature or specification.”
The uncertainty around branding is fueled in part because Nokia so far has released only one PureView device, the 41-megapixel 808. That uses its excess of pixels for oversampling – combining data from seven individual dots for each final pixel in a roughly 5-megapixel still – as well as to deliver lossless zooming. The end results are astonishingly good, though the lenses and CMOS sensor required are bulky.
That might be acceptable for a niche photography camera running Symbian, but Nokia needs to keep the Windows Phone 8 Lumia line-up slinky and pocketable. It’s unclear what software magic the company will combine with its supposed 8-megapixel Lumia 920 camera, though the expectation is that it will indeed be more a matter of processing than of the sort of raw oversampling seen on the 808 PureView.
SlashGear is headed off to NYC for Nokia and Microsoft’s Wednesday event, when we’ll see just what the two companies have been working on to launch Windows Phone 8. Catch up with all the rumors and leaks around the event in our wrap-up.
Your smartphone and / or tablet is just begging for an update. From time to time, these mobile devices are blessed with maintenance refreshes, bug fixes, custom ROMs and anything in between, and so many of them are floating around that it’s easy for a sizable chunk to get lost in the mix. To make sure they don’t escape without notice, we’ve gathered every possible update, hack, and other miscellaneous tomfoolery we could find during the last week and crammed them into one convenient roundup. If you find something available for your device, please give us a shout at tips at engadget dawt com and let us know. Enjoy!
Excitement, about a Symbian phone? The Nokia 808 PureView has forced many to reconsider their platform loyalties by virtue of its big number boast: 41-megapixels of camera goodness. The surprise stand-out of Mobile World Congress, the 808 PureView is the first public evidence of a five year labor of love inspired by ultra-high-resolution satellite photography. There’s compromise galore involved, however, to join the early PureView train, so is it worth it? Read on for the full SlashGear review.
Hardware
Miniaturization can only get you so far: if you want 41-megapixels – and Nokia really does – then you have to accept some heft with it. As a result the 808 PureView is a chunky phone, measuring in at 123.9 x 60.2 x 13.9 mm and 169 grams, though it’s biased toward the lens section with its oversized sensor. In the hand, though, it’s actually quite a pleasant thing to hold: the textured plastic back cover feels high-quality and sturdy, and your forefinger butts naturally against the curve of the camera hump.
That’s not to say you don’t notice it when it’s in your pocket. In contrast to the slimline devices we’ve grown used to, the 808 PureView makes for a considerable bulge; we could fit it into a jeans pocket, front or back, but it wasn’t the most comfortable we’ve ever been.
Controls include a three-button strip along the front, for call, menu and end/power, along with a volume rocker, lock switch and dedicated two-stage camera key on the right edge. Along the top there’s a micro HDMI port (for use with Nokia’s CA0198 HDMI kit) under a flap, a microUSB port for charging, and a 3.5mm headphone socket. Nokia includes a wired hands-free kit of decent audio quality, though we had no issues using third-party headsets with the phone.
Up front there’s a 4-inch AMOLED ClearBlack display clad in a sheet of Corning Gorilla Glass. As with all OLED-based phones it has great viewing angles, contrast and color saturation; however, it’s also running at a mere 360 x 640 resolution, and that means individual pixels are inescapable. The grittiness is visible from the outset, as soon as the start-up Nokia logo appears, and permeates throughout the phone experience. Considering the imaging focus of this phone, it’s a disappointment.
Inside, the 808 PureView packs one of the fastest processors to grace a Symbian device, a single-core ARM 11 running at 1.3GHz. It’s paired with 512MB of RAM and 16GB of storage, expandable with up to 32GB microSD cards. Connectivity includes pentaband HSPA (up to 14.4Mbps down/5.76Mbps up, networking depending) which means support for both AT&T and T-Mobile 3G in the USA, along with Bluetooth 3.0, WiFi b/g/n, NFC and quadband GSM/EDGE. Slot in the optional microUSB to USB Host adapter and you can attach peripherals like USB drives, and there’s A-GPS/GPS for navigation and photo geotagging.
Software and Performance
Software is the 808 PureView’s Achilles’ heel. Symbian, rebranded Nokia Belle in this latest iteration, is old in the tooth and considered outclassed by all but the staunchest of fans. With its UI borrowing some elements of Android – such as the drop-down notifications bar and the differently sized homescreen widgets – and sharing the squircle iconography of MeeGo on the N9 it’s certainly the best looking iteration of Symbian to-date, but day-to-day usability is still a pain.
What’s arguably the deal-breaker for Nokia Belle here is the performance. On the Nokia 700, which also runs Belle on a 1.3GHz single-core, we found ourselves conceding that it could make a reasonable entry-level device for the fledgling smartphone audience. Somewhere along the line, however, the 808 lost whatever turn of speed the 700 managed to squeeze from the processor.
The homescreen is fairly swift, but the 808 soon runs out of steam once you get into the apps. In the messaging app we’d sometimes have hammered out a half-word or so before the on-screen keyboard caught up; scroll fast through a full gallery and you’ll see nothing but placeholder thumbnails, turning navigating images into guesswork.
It’s the browser that’s the big nightmare, however, capable of paper of handling full sites but struggling with anything more complex than their mobile versions. Pinch zooming becomes trial and error, tedious since given the low resolution you’ll probably be doing plenty of it. Swipe around the page and you have to wait a second or two for the screen to catch up with you. Flip from portrait to landscape orientation, or back again, and the lag shows itself once more. Most annoying though is how prone to crashing it is, the app periodically shutting down altogether. We didn’t experience a full phone lock-up, but altogether it was enough to make us save our web browsing until we were home.
Oddly, we didn’t experience the same sluggishness on the 808 PureView units running non-final software on our trip to Carl Zeiss several weeks ago. Then, the Nokia seemed as responsive as the 700 had been. It’s possible that the final software tweaks have erred toward scaling back performance in favor of battery life, and if so we’re hoping Nokia sees sense and tips the balance back a little toward usability with a firmware update.
Camera
Make no mistake, the Nokia 808 PureView is all about photography. Nokia’s imaging team spent five years developing PureView – hence it being stuck with Symbian rather than getting Windows Phone like the Lumia series – and took the principles of mobile cameras back to basics in order to improve on quality.
We’ve covered the technology behind PureView on the 808 comprehensively here, but the brief version is that it’s a rethink of how lossless zooming can be supported on a phone. Traditionally that would demand an optical zoom lens, involving bulky moving parts; PureView does it instead with a surfeit of pixels. In PureView mode, the 808 uses its 41-megapixel sensor to capture more typical 2-, 5- or 8-megapixel shots, and in fact Nokia expects most owners to stick at 5-megapixel quality.
Nokia 808 PureView technology:
At 1x zoom, each pixel making up the final frame has around seven pixels on the sensor to feed into it, reducing the likelihood of a glitch or noise making it into the image. PureView can simply ignore any obvious outliers, making for more accurate shots. However, if you want to zoom in, the 808 can take a full-resolution (i.e. 2-, 5- or 8-megapixel) subset of the whole frame, similar to how a digital zoom magnifies a portion but with no loss in detail.
Exactly how much you can zoom depends on what PureView resolution you’re using – the 808 won’t allow you to get past the point where it can save a full-resolution image – so you get more range in 2-megapixel mode than you do at 8-megapixels. It averages at roughly 3x at 5-megapixels. The phone will also allow you to shoot at “full” resolution, either 34-megapixel 16:9 aspect images taken across the full width of the sensor, or 38-megapixel 4:3 aspect images taken across the full height of the sensor, though in that case you don’t get any zoom option.
The 808′s camera app has obviously changed from the Nokia Belle norm to accommodate PureView, and there are three key modes to choose between. Automatic strips you of all manual control bar toggling the Xenon flash between on/off/auto/red-eye modes, defaulting to roughly 5-megapixel frames, though you still get touch-focus. Scenes mode offers a choice of auto, landscape, portrait, sports, night, night portrait, spotlight and snow configurations, again with flash options and touch-focus.
Finally, there’s Creative mode, where the guts of PureView are opened up to more avid tinkerers. The 808 can be toggled between PureView mode – with the choice of three resolutions and both 4:3 and 16:9 aspect ratios – and Full Resolution mode – with either 16:9 or 4:3 settings – and save in either Normal or Superfine JPEG quality modes. Color tones can be switched between normal, vivid, sepia or black & white, and there’s optional bracketing, interval or self-timer modes. With interval, the 808 becomes a time-lapse camera, capable of shooting up to 1,500 images every 30 minutes (or as low as every 5 seconds).
Then there are sliders for saturation, contrast and sharpness, while icons on the preview screen control flash, exposure, lighting type, ISO (from 50 – 1600, with an Auto mode) and the ability to turn off the neutral density filter. Once you have a clutch of settings you prefer, you can save them to one of the three custom shortcuts for easier retrieval.
Is it worth taking the time to play? Oh yes, yes it really is. We reluctantly left Carl Zeiss and our last experience with the 808 PureView wowed by quite how capable the new Nokia is, and nothing from our review unit has convinced us to think otherwise. This isn’t just “good for a phone-camera” either; the 808 is easily able to produce shots that put dedicated point-and-shoots to shame.
Noise is almost non-existent, colors are as accurate as we’ve ever seen from a phone, and – as long as you take the time to tap the screen to set focus – crisp detail. Low light performance is hugely impressive, even before you bother turning on the (excellent) Xenon flash, as PureView squeezes all the extra pixel data into the final image.
In full resolution mode, meanwhile, you lack zooming ability but you get images of a scale that would traditionally demand a dedicated camera. There’s something near-magical about being able to glance across an image, think “what’s going on there?” and zoom in without facing a screenful of pixelated mush. At 34/38-megapixel resolution there’s no PureView finessing going on – there aren’t the extra pixels to enable it – but it does demonstrate just how capable the sensor and companion Zeiss optics are.
As for video, the 808 PureView will record in Automatic, Scenes (auto, low light, sports, spotlight and snow) or Creative modes, at 360p, 720p or 1080p resolution. A choice of 15, 24, 25 and 30fps frame rates are supported, plus the same color tone options as in stills mode, together with exposure and contrast. Since even 1920 x 1080 Full HD resolution doesn’t come close to what the 808′s sensor is capable of capturing, the same PureView oversampling is used to improve video quality, and just as with stills the evidence of that comes through in the final frame.
Nokia 808 PureView 1080p HD video sample:
Our only complaint is the somewhat sluggish continuous autofocus, which has a tendency to wander and is occasionally slow to refix. You can, however, tap to manually set a focus point. While your fingers are near the screen, it’s worth playing with Nokia’s clever zoom control: you can pinch-zoom, of course, but we found it easier to use the single-finger zooming where sliding your thumb up and down adjusts the degree of magnification. It’s easy to keep both hands steadying the 808 and still zoom in, and when you’re zooming during video capture the actual magnification doesn’t happen until you lift your finger, allowing you to precisely frame without the hunting of regular systems. Alternatively you can use the zoom rocker, and unlike the stepped zoom levels of some devices, it’s a silky-smooth transition.
Nokia 808 PureView 1080p HD video sample:
Audio during video recording is often overlooked, but Nokia has saved a little magic for that, too. The PureView has twin microphones for capturing stereo sound, but it also includes Rich Recording, a way to capture high-volume audio without suffering from distortion or clipping. In fact, Nokia claims the 808 is capable of handling four-times louder sound than regular phone microphones, without having to introduce the sort of filters that can leave the audio track weedy.
Going by Nokia’s spec sheet, the 808 PureView should be able to capture the sound of a jet engine from 100-feet away without any stereo distortion. Topping out at 145dB, in fact, it’s beyond the point where human ears would likely suffer permanent damage even if they’re equipped with hearing protection. An average rock concert, meanwhile, at a more humble 115dB should be no problem at all for the 808 PureView, though we’ll need to schedule one on our jam-packed social calendar to actually test that out.
Getting photos and video off the 808 is reasonably straightforward. The phone can be set to show up as a Mass Storage device when plugged in via USB, appearing on your PC or Mac as an external drive (rather than demanding a management app as per Windows Phone). However we were surprised to find transfers very sluggish to our test Mac: shuttling just over 440MB of photos and video took around five minutes, in fact. There’s no native option to automatically upload images to an online gallery.
Nokia has already confirmed that PureView technology won’t be limited to just the 808. However, that’s already prompted confusion around just what sort of resolution sensors we can expect in future Lumia Windows Phones. PureView does not necessarily mean 41-megapixels – Nokia picked that number to satisfy headlines and deliver a 3x optical zoom equivalent for 5-megapixel frames – but instead refers to the oversampling technology; a lower-resolution sensor would still deliver a lossless zoom, albeit with a smaller range, while allowing for a thinner device.
Phone and Battery
Nokia has a strong track record with phone radios, and the 808 PureView is no exception. We had no issues with keeping a signal, and the dual-microphones meant in-call audio was clear. The 808′s 1,400 mAh battery is rated for up to 6.5hrs of 3G talk time or 540hrs of 3G standby, though the actual sort of longevity you’ll see from it is very much dependent on how much you play with the camera. The Xenon flash in particular will chug through battery in short order. In practice, we managed a day of relatively eager use before we had to reach for the mains adapter.
Wrap-Up
Viewed as a modern phone, the 808 PureView is a recipe for frustration. It’s heavy and chunky, the screen lacks pixels, Nokia Belle is short on apps and long on aggravation, and even those apps that are onboard run with varying degrees of wretchedness on the wheezing processor. When the 808 starts to make more sense is when you flip it around, and consider it not so much a phone with an amazing camera, but an amazing camera with a 3G internet connection.
With such mundane matters as messaging, internet browsing, multimedia and apps left to a more flexible (but less photographically-capable) platform like iOS or Android, that frees up the 808 PureView to do what it undoubtedly does best: take awesome photos and video. If you can find space in your pocket or bag for two phones, and you’re a keen shutterbug, then there are huge advantages to using the 808 rather than your regular phone camera.
Therein lies the rub: at $699 unlocked and SIM-free in the US, it’s an expensive second device. That would get you a good Micro Four Thirds camera, though blind testing suggests the 808 can produce photos as good as, or better than, such compacts. It would also be enough for an entry-level DSLR, though you’d lose any semblance of pocket-friendliness in that case.
In the end, though, even the fact that we’re comparing the 808 PureView to DSLRs is testament to Nokia’s achievement. Few people will actually go out and buy it themselves, but then the 808 is really a test bench for PureView technology, a proof-of-concept. Now that it has convinced us of its merits, Nokia can leverage the branding to differentiate its Windows Phone range. Frankly, the sooner it can do that, the better.
The Nokia 808 PureView has a 41-megapixel camera sensor. But you knew that. The crystallization of five years of imaging R&D has landed, and the timing couldn’t have been better for Nokia. Alongside uncomfortable financial reading, its move to Windows Phone hasn’t exactly set the smartphone world alight just yet. It’s seemingly established itself as the go-to WinPho choice for American customers thanks to some aggressive pricing, but with news that the next iteration of Windows Phone won’t come to the Lumia 900, many will hold out for Nokia’s next handset. Whatever that device will be, it’s likely to bring the same PureView technology we’ve got here on the Nokia 808 PureView — a Symbian-based handset whose software has seen better days. However, OS be damned, it still blew away attendees at this year’s Mobile World Congress. Impressive stuff, given that it’s the same show where HTC’s admirable One series debuted.
That huge sensor is paired with a new five-element Carl Zeiss lens and a refreshed flash with double the strength of the one on the Nokia N8 — the existing cameraphone champ. But behind the technical bullet points, it’s how Nokia maximizes the 41-megapixel sensor, oversampling with those pixels to create improved 5-, 8- , 3- and 2-megapixel images, reducing noise and improving low-light performance. However, when it comes to software, Symbian Belle (with Feature Pack 1 in tow) lags behind the likes of Android, iOS and Windows Phone in user experience and app provision. Similarly, the chunky handset flies in the opposite direction of the trend for slim smartphones. Is that camera module really all Nokia thinks (and hopes) it is? What’s more, is Symbian relevant enough for such future-facing goodness? Let’s find out.
How much are you willing to spend on Nokia’s 808 PureView? Whatever figure you had in mind, Amazon UK has thrown up a pre-order page for the 41-megapixel packing phone. The release date is pegged for June 30th, so not long to go, but if you want to own a little piece of history you’ll have to say goodbye to £499.98 (~$782). Expensive, yes, but there also isn’t anything out there quite like it.
We’ve received our 808 PureView here at SlashGear and are currently busy putting it through its paces, but so far we’ve been impressed with the quality of the camera output. Reviews and samples from across the internet also indicate just how good that camera really is, although for the price Nokia is asking we should certainly hope so. Unfortunately, it’s all held back by the inclusion of the Symbian operating system, but hopefully we’ll see the technology make a jump to Windows Phone in the not too distant future.
The phone will be sold unlocked in the United States as well for around $699, with a slightly later release of July 8th. Good news for those on T-Mobile USA though, as the handset will be compatible with the carrier’s 3G bands in addition to AT&T’s. We’ll be bringing you a full review of the phone shortly, so stick around to find out if the PureView is worth the high asking price.
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