Nokia 808 PureView launched for Rs. 29,999, brings 41MP camera
Nokia’s 41MP camera phone is finally on sale in India for Rs. 29,999.
Available now on Nokia India official store, Nokia PureView 808 is primarily known for the PureView imaging technology and the massive 41-megapixel camera sensor on-board. Other features of the smartphone include a 4-inch 360x640pixel AMOLED display, 16GB of internal memory, 1.3GHz processor and Nokia Belle OS.
The Nokia 808 PureView also includes full-HD 1080p video recording and playback with 4X lossless zoom and Nokia Rich Recording. Rich Recording enables audio recording at CD-like levels of quality, previously only possible with external microphones.
The smartphone is currently available in the black colour, with no word on the release of other colour options.
Some details about the camera
With a total pixel count of 41million the camera in the Nokia 808 PureView at first glance would seem ripe for producing very noisy images in low light. However, Nokia claims its ‘pixel oversampling’ technology enables it to produce much cleaner images than we might expect in low light.
Essentially pixel oversampling is ‘pixel binning’ and it links several pixels together so that they are treated as a single ‘super’ pixel. The stronger signal generated by this super pixel requires less amplification so that the image suffers from less noise.
The benefit of using more small pixels rather than fewer larger pixels is that the sensor should be better able to resolve detail. It also means the system is flexible and in bright light when noise is less likely to be an issue, higher resolution images can be created with less (or no) oversampling .
Like other digital cameras, the 808 PureView has an effective pixel count that is lower than its total pixel count. In 4:3 format mode it uses 38 million of the pixels on the sensor, while in 16:9 modes images use 34 million sensor pixels. However, in its default settings pixel oversampling means that 16:9 images from the 808 PureView have 5 million pixels.
Nokia uses a form of digital zooming in the 808 PureView camera and a smaller area of the sensor is used to create the image as the user zooms in.
Pixel oversampling is still employed, but as the number of pixels in the imaging area decreases, the oversampling is reduced.
The maximum zoom level is reached when the number of pixels within the active sensor area equals the selected image size. Hence in the default 5Mp (3072×1728 pixels) setting the maximum zoom level is reached when there are just 5 million pixels making up the image and no oversampling is taking place.