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Among their many features, the picture is playing an increasingly important role in smartphones, with a quality that rivals today's most compact digital cameras.
Smartphones increasingly sophisticated.
Long overdue in terms of photo quality and technology, became smartphone camera phone keeps crop market share over conventional digital compact.
Samsung, Nokia (Microsoft), Sony , or Apple , all are to benefit their users to advanced sensors (4 to 20 megapixels), some - such as the Nokia Lumia 1020 - currently up to almost 41 million pixels.
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A resolution of 41 million pixels means that the image will be composed of 41 million "points"! This therefore ensures high precision image. But this criterion is not enough to make his choice.
Two main sensor technologies for a similar result
Besides the resolution, sensor size is an essential element in choosing a mobile camera. A sensor is large it can capture more light and thus restore a good quality image.
There are currently two main technologies that power the sensors of a smartphone: the
CMOS and CCD .
These sensors are essential for the quality of the photo as they are responsible for capturing light , and then to return a digital image, the principle of which is modeled on the traditional film photography.
CMOS emerged in the 90s and have the advantage of producing low-cost high-resolution sensors.
CCDs are very similar technically CMOS but have a higher cost, so they are less common than the latter.
However, difficult to say that a photo will be better because taken with a CMOS or CCD. It is better to focus on other criteria.
Resolutions steadily increasing.
If high resolution displays more pixels (the unit that defines the quality of an image), the sensor size is also important.
Both handsets can display a high quality image, for example with the screen 5 inch HTC One M8 and HD resolution of 1920 × 1080 pixels.
While most modern screens, many manufacturers offer different technology to the screen: Super AMOLED Samsung , Sony Triluminos etc ...
Flash LED or Xenon?
There are two types of flashes: LED and Xenon .
One LED is the most common because it allows miniaturization. Smartphones such as the iPhone 6 using dual technology LED (yellow and white) to increase the light, main fault
LED flashes.
The Xenon flash like the Nokia Lumia 1020 is more powerful and has a longer reach. It reduces blur and grain pictures at night.
Lovers of night photos, ask about the flash type on the camera phone you covet!
Digital zoom and optical zoom
Unlike most digital cameras that have optical zoom (zoom is "physical" and is used to vary the focal length), the camera phones have digital zooms.
This means that the magnification of the image is done artificially by reducing the image resolution.
With the increase in the definition of sensors, it is possible to get pictures of satisfactory quality when zooming digitally altered rendering intervening in substantial zooms.
Supporting this argument, the PureView 41 megapixel sensor that has the Nokia Lumia 1020 allows you to digitally zoom in as if it were equipped with an optical zoom.
The picture modes integrated by manufacturers.
Besides taking pictures classic, modern camera phones now offer alternative capture modes.
We recover the panorama modes, burst, sepia, black and white. But recently appeared modes like "best photo", "action shot" ... and more.
" Best Photo ": the camera takes multiple photos quickly and chooses the most successful.
" Action Photo ": the camera takes multiple shots during an action and superimposed on the same image to give a dynamic effect.
Many other modes exist depending on the manufacturer and can bring added value interesting when you choose a camera phone.