Tu kompletnie nie chodzi o megapiksele. Dla tych co nie lubią czytać skopiuję najważniejsze:

Lessons learned
With the 12Mpix Nokia N8, for example, we were more concerned with capturing photons of light than
ramping up the number of megapixels. We bucked the trend and went with a large sensor and 1.75
micron pixels — but the result was a new benchmark in image and video quality. This set the Nokia N8
apart at the time, and competitors are still trying to match it two years later. The Nokia PureView Pro
comes is equipped with an even larger sensor, 1/1.2” approximately 2.5 larger than the sensor used
in the Nokia N8. The result is an even larger area to collect photons of light. With PureView we’re
continuing to make choices focused on performance rather than pixels for pixels’ sake. Fewer but
better pixels can provide not just better image and video quality, but better overall user experience
and system capability.
In fact, 5Mpix-6Mpix is more than enough for viewing images on PC, TV, online or smartphones.
After all, how often do we print images bigger than even A4?
Matryca działa jak w niektórych aparatach Fuji czy Foveon w Sigmie.
Czyli Nokia rozumie to czego np. Nikon nie rozumie pakując 36mpx bez oversamplingu do 16 czy 12 mpix.
Połączenie 7 pikseli w jeden da 5mpix o konkretnej jakości.

I jeszcze specyfikacja:
Nokia 808 PureView lens and sensor specifications
• Carl Zeiss Optics
• Focal length: 8.02mm
• 35mm equivalent focal length: 26mm, 16:9 | 28mm, 4:3
• F-number: f/2.4
• Focus range: 15cm – Infinity (throughout the zoom range)
• Construction:
· 5 elements, 1 group.All lens surfaces are aspherical
· One high-index, low-dispersion glass mould lens
· Mechanical shutter with neutral density filter
• Optical format: 1/1.2”
• Total number of pixels: 7728 x 5368
• Pixel Size: 1.4 microns