Tech-blog

Nokia 41 megapixel?! Nokia 808 PureView

2012-03-05T21:38:00.000+01:00

There's always been a misunderstanding that the more megapixels, the better the image quality. Although it's not true, unless you want to blow your quick snaps up to the size of a building, it gives you more flexibility when editing your photos.

One of the biggest launches at Mobile World Congress (pun intended), was Nokia's behemoth of a smartphone camera. The Nokia PureView 808 comes with a 41-megapixel camera.

The Nokia PureView 808 may not be the most attractive device announced, and it operates on Symbian, which is equally as unattractive, but it does raise an important question - how much is too much when it comes to mobile photography?

Vesa Jutila, Head of Symbian Product Marketing at Nokia says the company has been working on the camera and integration of it into a phone for a long time.

‘The Nokia N8 was a premium imaging phone. It received a great reception and it's still selling strongly globally. This is introducing the next generation, and we want to reclaim our leadership today,' he says.

The company didn't have to put such a high resolution camera into the PureView, but decided to as its top range Pro product.

So how has Nokia managed to produce such great results?

The first part is the physical sensor. The actual component is huge so it's easy to understand why is creates a bulge on the back of the PureView 808. It measures 11mm width and 8mm in height, but it's this size that means it can let in a lot of light and produce noise-free shots.

The sensor also doesn't have any moving parts, save for a filter and the autofocus. There's no optical zoom, only digital zoom, which doesn't physically zoom in.

The sensor works in two modes - 16:9 and 4:3. At 16:9, the camera shoots at 34-megepixels. At 4:3, it shoots at 38-megapixels.

Nokia's PureView technology is supported by larger pixels. Traditionally, mobile phone camera sensors have shrunk the pixel size so they're a lot smaller (around 1.4 microns) than those in compact or DSLR cameras, and therefore, the photos lack the same detail as pictures taken on standalone cameras.

Nokia has decided to buck this trend, by introducing pixels around 4.5 microns in size.

The third important aspect is pixel oversampling. Pixel oversampling involves merging multiple pixels to make one ‘super' pixel. The noise is removed, but clarity and detail remains.

The more you zoom in, the fewer pixels merge and the more they act like regular pixels.

Jutila says, ‘Oversampling allows you to take away all unnecessary detail. It gets rid of noise. Even with high-grade normal lenses, there's a little noise. Image cluster in the sensor and advanced algorithms cleans away all failures and noise from the pixels. It produces perfect detail and pure quality.'

It allows you to zoom into a specific detail in your viewfinder and take a photo of just that with crisp edges. Even if you're shooting in 5-megapixel mode, you can zoom in to capture the detail without any loss at all of quality. With video, you can zoom in four times without extra noise.

Do we need a 41-megapixel smartphone? Nokia's PureView technology we don't need a 41-megapixel camera at all. Even Nokia doesn't think it needs to have such high resolution.

However, higher numbers sound better, and who wouldn't want to take a picture that can be printed out and plastered on the size of a house? If only we had a printer big enough.

Nokia 808 PureView highlights

Camera features
- 41 megapixel sensor with pixel oversampling
- Lossless zoom: 3x for stills, 4x for full HD 1080p
- Carl Zeiss optics
- Focal length: 8.02
- 35mm equivalent focal length: 26mm (16:9) / 28mm (4:3)
- f/2.4
- Optical format: 1/1.2"
- Total pixels: 7728 x 5368
- Pixel size: 1.4 microns
- LED light for video capture
- Xenon flash for still images. Range 3.5 meter
- Geotagging
- File format: JPEG
- 1080p HD video capture @30fps
Size: 123.9 x 60.2 x 13.9mm
Weight 169 gram
4-inch AMOLED touch display, 360 x 640 pixels, 16.7 million colours, ClearBlack display
Networks: GSM/EDGE 850/900/1800/1900, UMTS 850/900/1700/-2100 1900/2100
Wi-Fi
Bluetooth
A-GPS
HDMI
DLNA
NFC
Micro USB
FM transmitter
3.5 mm audio jack
16 GB internal storage. Expandable with micoSD card up to 48 GB (including internal)
1400 mAh battery
Talk time: 11 hours
Standby time: 465 hours
Nokia Belle OS
Nokia Maps with free car and pedestrian navigation

How to update Nexus S I9023 SLCD to Ice Cream Sandwich 4.0.3

2012-03-05T19:45:00.001+01:00

Google seems to have released a combined update for all Nexus S GSM owners, which includes the Super AMOLED version as well as Super Clear LCD version. It was confirmed by several of our readers, who updated their Nexus S GT-i9023 to Android 4.0.3 using the same build that was said to be released for I9020T only.

An OTA version will be on its way shortly, but if don’t want to wait for OTA; you can update your Nexus S I9023 right way using the following guide.

Download the Update from here
Rename the downloaded file to update.zip (although not necessary but helps)
Copy update.zip to the root of your internal storage
Switch off your Nexus S
Hold Volume Up and Power to reboot into the bootloader
Select “Recovery,” then press power button
Once the triangle with exclamation mark appears, press power button and volume up at the same time to enter recovery menu
Select “Apply update from /sdcard”.
Once the process is finished, reboot your phone and your Nexus S is updated to Android 4.0.3.

Official Google Mobile Blog: Introducing Chrome for Android

2012-03-05T19:17:00.000+01:00

Official Google Mobile Blog: Introducing Chrome for Android: In 2008, we launched Google Chrome to help make the web better. We’re excited that millions of people around the world use Chrome as their ...

Official Google Mobile Blog: 10 Billion Android Market downloads and counting

2012-03-05T19:16:00.000+01:00

Official Google Mobile Blog: 10 Billion Android Market downloads and counting: (Cross-posted on the Official Google Blog and Android Developer's Blog ) One billion is a pretty big number by any measurement. However...

Paleontologia

2011-01-21T15:05:00.000+01:00

Geologické podložie je budované usadeninami treťohorného mora, sopečnými tufmi (popolmi) a lávami treťohorných vulkánov, štrkovými náplavmi riek a pieskovými návejmi vetra z obdobia štvrtohôr. Pod týmito vrstvami hornín sa v priemernej hĺbke 2600 metrov nachádza ešte staršie, predtreťohorné podložie. Horniny boli zvrásnené a pomerne ustálené v alpínskom vrásnení, to je približne pred 135 až 65 mil. rokov.
Po horotvornej činnosti nastalo obdobie pokoja, kedy dochádzalo len poklesávaniu častí zemskej kôry a v oblasti súčasnej Východoslovenskej nížiny a Košickej kotliny sa začali vytvárať priestory pre ukladanie morských usadenín, sedimentačné bazény. More nastupovalo do tejto oblasti postupne. v období zvanom egenburg (pred 22 mil. rokov) bola oblasť okolia Niznej Mysle, Cane, Gece ešte súšou, a na sever Košickej kotliny už preniklo more. v období karpat (pred 22 mil. rokov) sú tu výbežky starého, treťohorného, dnes už zaniknutého mora Paratethys, ktoré sa rozkladalo v oblasti Panónskej panvy. Na morskom dne sa dlhé milióny rokov ukladali mohutné vrstvy uloženín, ktoré prinášali morské prúdy a vlievajúce sa rieky z pevniny. v hlbších častiach sa ukladali najmä íly, v plytších piesky a na pobreží piesčito - štrkovité usadeniny. Celková hrúbka týchto uloženín dosahuje aj niekoľko kilometrov. v období báden (pred 16 mil. rokov) ožíva sopečná činnosť, vybuchujú prvé sopky a pri týchto explóziách na okolie dopadajú množstvá sopečného popola, na ktorý sa vylievala láva.
Sopečná aktivita trvala až do obdobia spodného panónu (približne pred 10 mil. rokov). v tomto období sa zároveň odtieľto začína sťahovať more, ostávajú tu po ňom nejaký čas uzavreté lagúny, bohaté na morskú faunu, ktoré sa postupne zanášajú pieskom a splavovaným sopečným popolom. Po období treťohôr prichádzajú štvrtohory, kedy sa na tomto území rozprestiera súš a krajinu pretvárajú najmä ľadovce, vietor a rieky.

Pirenella picta picta
priblizne 16mil. rokov

2011-01-21T14:30:00.000+01:00

Garmin Oregon je asi najlepsie momentalne volba od garminu.
Zakupil som si ho na turistiku a geocaching.
Citatelnost je dobra. V zime podstvietenie staci a v lete podsvietenie vypnem a vyuzivam slnko. Oregon vyuziva mensiu reflexivnosť displeja, takze podsvietenie staci v slenecnom dni vypnut a tym aj usetrim baterku.
Napr. predvcerom som bol s kamosom na keskach a on ma Garmin 60CSx a tam som porovnal podsvietenie a bola na 60CSx ovela lepsia citatelnost na priamom svetle. Ale ako nedostatok Oregonu nedavam,ozaj nemam problemy.
Na geocaching je oproti starsim modelom idealny, celkovo podzlozka Geocaching na hladanie kesiek, editaciu, prezeranie je uzasna. Na geocaching oregon odporucam.
Rozdiel medzi 450 a 550 je taky, ze 550 ma + fotoaparat.
Odporucam nekupovat T verziu.. Je zbytocne predrazena koli cestnej mape europy. Skor kupit s Topo3 mapami.
tak v kratkosti :)
Oregon 450T + travelbug

Microscopic

2011-01-21T14:05:00.000+01:00

Kde to zacina a kde konci v nasom svete??