Windows Phone News: Nokia Lumia 720 has a superior camera for a mid-range device - according to Juha Alakarhu Nokia’s head of imaging technologies


Thursday, February 28, 2013

Nokia Lumia 720 has a superior camera for a mid-range device - according to Juha Alakarhu Nokia’s head of imaging technologies

It seems that the Nokia Lumia 720 has a superior camera compartment, feature that is not so obvious for a mid-range device. Nokia, through its blog Nokia Conversations, presented the main strengths of the WP8 devices in terms of the imaging.
The camera of the Nokia Lumia 720 has a  6.7-megapixel sensor, a choice that is not random. A resolution too high, in fact, would condition the possibility of integrating a lens with an aperture very wide.

Juha Alakarhu Nokia’s head of imaging technologies explained:
“There are many factors that influence camera performance; it’s all about finding the right balance of these factors.” says Juha Alakarhu, Nokia’s head of imaging technologies. 
“We simply wanted to create the best possible image quality with this product. Everything else was secondary. It’s what you can capture with the camera that matters rather than the technical parameters.”As a result of this steadfast approach, the Nokia Lumia 720 has an outstanding imaging experience for a midrange smartphone. 
Seeing light through the dark 
“So, as we had free hands to decide the technical parameters, we first created several concept designs and simulated their performance. We actually considered different sensor sizes, pixel sizes, and resolutions from 3 to 12 megapixels. Going too high resolution could lead to reduced aperture size (the hole that lets in the light). On the other hand, we didn’t want to go too low either, given the physical limitations set by Bayer sampling and Nyqvist theorem.

The optical aperture f/1.9 is one of the most important specifications of the camera. It is the first Nokia smartphone to use that technical solution that allows you to capture a large amount of light.
To further improve the performance in low light conditions and helps the sensor type backlight . Concludes the framework of the hardware features the ability to take pictures in 16:9 real format (without croping the image).
To achieve a good camera is not enough hardware well done, but you need to associate it with a superior management software. From this point of view, the Nokia Lumia 720 inherits the experience developed by Nokia in the field imaging with regard to the management algorithms of digital noise and the application of filters to improve the sharpness .
The care of the camera compartment is not limited to the main one, but also extends to the secondary camera . It is a module with a view f0rmata four lenses , a record for a front-facing camera built into a smartphone. The aim also has an opening f 2.4 which helps to improve the image quality in low-light conditions.
Nokia has shown the potential of the camera posting a few test shots on the Nokia Conversations blog

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