Review: Nokia 808 PureView
1 Nokia 808 PureView: Introduction
When the Nokia 808 PureView was announced earlier this year its 41MP camera sensor (for a maximum output resolution of 38MP) made headlines all over the tech industry. Not only does it feature the highest-resolution sensor of any mobile phone camera, but at the time of writing, the 808 PureView features the highest-resolution sensor of any current camera outside of highly specialist (and very costly) medium format equipment.
We've been eager to gets our hands on an 808 since the phone was announced, and a loan sample finally arrived in our Seattle office recently. We've been using it ever since. Please note though that this article doesn't touch on the 808 PureView's performance as a phone. That's not what interests us. We want to see what it's like as a camera...
Key Photographic/Video Specifications
- 38MP maximum resolution (in 4:3 aspect ratio - output size: 7728 x 5368 pixels)
- 1/1.2" CMOS sensor, pixel size: 1.4um
- ISO 80-1600 (+ auto)
- Five white balance presets (including auto)
- Exposure compensation +/-4EV in 0.3EV steps
- Carl Zeiss F2.4 8.02mm lens (26mm, 16:9 | 28mm, 4:3 equiv)
- Focus range: 15cm – Infinity (throughout the zoom range)
• 5 elements, 1 group. All lens surfaces are aspherical
• One high-index, low-dispersion glass mould lens
• Mechanical shutter with neutral density filter
- 1080p HD video (up to 25Mb/s) with 4X 'lossless zoom'
- Stereo recording with Nokia Rich Recording - rated up to 140db
The Nokia 808 PureView's large CMOS sensor has 41MP total, outputting a maximum of 38MP (resolution drops to 36MP in 16:9 aspect ratio). Such a high resolution sensor would be little more than a stunt if the camera specifications aren't up to scratch, but Nokia has designed the 808 to be a serious photographic tool. As well as some pretty impressive hardware, Nokia has also included a raft of enthusiast-friendly photographic features in the 808 including manual control over white balance, ISO and exposure (via exposure compensation and bracketing). Exposure compensation is as good as it gets though, in terms of manual exposure control - the 808 does not offer PASM modes (not unsurprisingly).
The Finnish company is at pains to point out that when it comes to image capture, the 808's headline specification of 41MP is far from the whole story. In fact, one of the reasons why Nokia has incorporated such a high pixel count is to allow the 808 to produce better quality lower-resolution images (3MP, 5MP or 8MP).
While it might sound counterintuitive to shoot a 38MP camera at 3MP, it actually makes a lot of sense in a device of this type. Apart from anything else, if you are one of those people whose first reaction to this product was to scream 'you don't need 41MP in a camera phone! The world has gone mad! The sky is falling in!' in a sense you were right - most people simply don't need to capture such high-resolution images on a phone.
But what you probably do want from a cellphone camera is good image quality, decent speed and responsiveness, and wouldn't it be nice to have a zoom, too? That's what the 808's lower-resolution PureView modes are designed to allow.
Putting optical zooms into cellphone cameras is hard. Really really hard, which is why manufacturers tend to include digital zooms instead. Effectively just cropping and upsizing, conventional digital zoom kills image quality. Normally, the instinct of any serious digital photographer would be to run away from 'digital zoom' features for precisely this reason. But the 808 is very far from conventional.
|Images captured in the 808's PureView modes are created by oversampling from the sensor's full resolution. At the 808's 'native' focal length of 28mm equivalent, the oversampling ratio is 14:1 for 3MP images, compared to 8:1 for 5MP and 5:1 for 8MP.|
In Nokia's words, 'pixel oversampling combines many pixels to create a single (super) pixel'. In theory then, at 28mm (equivalent) - i.e., without any 'zoom', the camera's 3MP PureView output should give the best critical image quality, followed by 5MP, then 8MP, and then 38MP. When fully zoomed in, all four output modes will give the same pixel-level image quality, since at this point there is no oversampling going on -as incated by '1:1' in the graph above.
How much you can 'zoom' using the 808 depends on what output resolution mode you're in. If you're shooting at full resolution you can't zoom at all - you're stuck with the lens' native 28mm (equivalent) focal length. In 3MP PureView mode you get the equivalent of a 3.6X 'zoom' - this drops to roughly 3X in 5MP mode, and about 2X in 8MP mode. The table below shows four images, taken at the 'longest' extent of the 'zoom' in each of the 808's output resolution modes.
|38 MP (1X)||8 MP (~2X)||5 MP (~3X)||3 MP (~3.6X)|
Compared to today's travelzoom compacts a 3.6X zoom is nothing much to shout about, but it's better than no zoom at all or - worse - a conventional digital zoom that upsizes cropped images into mush. Even a 2X zoom in 8MP mode allows a useful degree of control over framing, as you can see from the image above.
You can view and download a PDF on Nokia's PureView technology here.
|Sophisticated construction by the nature by Orchideon|
|Iguazu falls by Claudio Galli|
As with any creative pursuit, sometimes you find your photography stalled. And sometimes making a book of your cat photos is just the thing to get inspiration flowing again.
Following some initial lab testing results, Lensrentals has published a full review of the highly-anticipated Sigma 24-70mm F2.8 Art.
EyeEm has revealed the finalists for its fourth annual photography contest, the largest competition of its kind.
Via its strategic partnership with Huawei Leica is already in the smartphone camera development game, but chairman Andreas Kaufmann can imagine the German manufacturer taking things one step further.
In a blog post the imaging engineers behind the dual-camera in Andy Rubin's Essential Phone explain how the imaging components were developed and calibrated for best performance.
Tamron calls it an 'ultra-telephoto,' and for good reason: this lens offers a massive 27-600mm equivalent zoom range. But is it sharp?
It started with a great idea and a slick promotional video, and ended with the company headquarters being raided by the San Francisco District Attorney’s office. Wired reports on Lily, the selfie-drone maker that never got off the ground.
With card readers disappearing from MacBooks, USB-C card readers are now a necessity. Macworld's helpful guide compares five models and decodes the current mess of card speeds and certifications.
A Sony a7S II mounted on the outside of the ISS' Japanese Experiment Module (KIBO) for the last seven months has sent back some impressive 4K video and stills.
A Federal judge has refused to throw out a copyright case against controversial artist Richard Prince, who used an image by photographer Donald Graham in an exhibition.
Sony has teased its customers with news of an upcoming announcement: it will soon take the wraps off a new CineAlta motion picture camera, one sporting a 36x24mm sensor.
QuikStories is integrated into the latest version of the GoPro app and automatically creates 'stories' using the video clips you've shot during a day.
Journalists photographing a protest in the US Capitol building claim they were told by Capitol Police to delete photos and videos of arrests.
The Meizu Pro 7 Plus secondary display can be used for music playback, date and weather-related information, or as viewfinder when taking selfies with the rear cameras.
Nikon is marking its 100th anniversary in many ways, including the creation of a new scholarship program for 'future visual creators' in the USA and Canada.
Take one Digital ELPH (or IXUS), rotate it vertically, add a fully articulating LCD and a lens with a camcorder-like focal length, and what do you get? Why, the Canon PowerShot TX1, of course. In this week's Throwback Thursday we revisit Canon's one-of-a-kind hybrid stills/video camera.
Just in case there was any doubt in your mind, here's the definitive video proof that yes, a $50,000 cinema camera beats the pants off a $50 camcorder in a side-by-side test.
Photographers who fly frequently in the US may want to finally invest in that TSA Pre-check status: in standard security lines, cameras and all other electronics larger than a smartphone will need to be placed in a separate bin for screening.
Images have appeared which claim to show Nikon's forthcoming D850 DSLR, the development of which was announced this week. If genuine, the pictures indicate that the D850 will offer illuminated controls and a tilting LCD screen, but no built-in flash.
To celebrate the Daguerreotype Achromat 2.9/64 lens' successful Kickstarter campaign, Lomography has announced a chrome-plated version of the lens in Nikon and Canon DSLR mounts.
Nikon just released four new firmware updates, adding features and fixing bugs in the D600, D610, D750 and the KeyMission 80.
It probably hasn't made your landscape photography bucket list just yet, but there's a good reason to visit Idaho. Here are 9 must-visit locations in this beautiful state.
Oops... Adobe accidentally leaked their unfinished Lightroom-powered cloud-based photo editor 'Project Nimbus' to some Creative Cloud users yesterday.
Storm chaser and award-winning photographer Mike Oblinski just released his latest time-lapse, and it is absolutely stunning.
Looking to level up your video capture capabilities without buying a whole new camera? Blackmagic's Video Assist 4K is well worth considering, despite a few flaws and its lack of 4K/60p support.
We're big fans of Fujifilm's fast-growing GFX system, and the GF 110mm F2 lens is no exception. Positioned as the system's classic portrait lens, its optics are just as impressive with non-human subjects as well.
Nikon turns 100 years old today, and the company is celebrating with a wacky music video, some tributes to its history, and a new vision presented by president Kazuo Ushida.
Phottix just released the Premio Parabolic Umbrellas series, replacing their Para-Pro line with a stronger, deeper and better made set of parabolic umbrellas.
The Moto Z2 is Motorola's first dual-camera smartphone and, compared to its predecessor, comes with a number of improvements and new camera features.
Researchers at Stanford have revealed a new '4D camera system' built for robots. The system is based on the same light field tech that allowed Lytro cameras to refocus images after they were taken.