In the following pictures, you’ll see how the PureView sensors stack up against the competition.
The sensor in the 808 is the largest ever put in a mobile phone, as is larger than those found in the top end compact point and shoot cameras. The previous king of the sensor was another Nokia, the N8. In the picture above, you can see how big this sensor is in comparison to a generic camera phone.
Below, the 808 sensor next to the whole camera module of the 920.
This one brings back a few memories. The N93 has a long and large camera module due to the optical zoom (and also, sensor sizes had been gradually becoming more compact).
The long barrel is inserted horizontally on the phone so that the width is used and not the thickness of the phone, thus allowing more space.
Sensor size is very important in image quality. More pixels on a tiny sensor means not a lot of light per pixel. 808 uses both a large sensor, but also excess pixels (41mp sensor) for over sampling. PureView phase 2, found in the Nokia Lumia 920, focuses on the floating lens PureView phase 2 optical image stabilisation. Both are excellent compared to the competition, each with their own strengths.
Eventually, the expectation is for both PureView 1 and 2 to be combined into some SuperPureView Avengers mash up.
Cheers ‘Z.” for the tip!