In the camera market, races are held with megapixels. Megapixels are one of the most characteristic factors of the quality of a camera and also the most used feature in terms of advertising.
The megapixel measures the resolution of a horizontal and vertical image.
Basically, if you take an image and start counting pixels from a low angle, you can multiply the two dimensions to get the total number of pixels in the image.
The more pixels there are, the higher the resolution.
A megapixel is literally a million pixels in the digital image.
READ ALSO: Meaning of screen resolution for TV and monitor and for photos
To calculate how many megapixels a camera can produce just multiply the horizontal and vertical resolutions of the sensor, and divide the result by one million.
1000 × 1000, for example, is a megapixel .
A 1920x1080 image is a little more than two megapixels.
A 4K image is more than 8 megapixels.
But who needs such a big picture "> Wikipedia)
To take quality photos to print on an A4 format, you must use a camera of at least 8 megapixels.
However, if you print photos with a smaller size choosing classic photography formats like 10x15cm, then a 6 Megapixel camera will be more than enough, even to zoom in on a detail.
Note that a photo taken by a 6 Megapixel camera is smaller, but not half the size of a photo taken with 12 Megapixel.
Not to mention that photos taken at a resolution of less than 6 megapixels take up less space in the memories of smartphones, in cloud spaces and in hard disks.
Consequence of this is that it is useless to chase the smartphone with the bigger camera if you then print a few photos and in a small format.
This discourse loses meaning and falls for professional photographers, for those who intend to print posters, if you work with 600 DPI photoshop or if, of the photos you take, you want to enlarge some details by cutting everything else.
Zooming on a photo and printing even on a classic format may require an image taken with a 13 or 16 Megapixel camera.
So if it is true that megapixels count up to a certain point, there are many other features to consider when choosing a camera: color accuracy, low light performance, lens quality, sensor size.
Unfortunately, it can be difficult to find such technical specifications for a smartphone and often, to understand if a mobile phone has a good camera, you need to read blog reviews.
As seen, there are also sites for making comparisons of cameras
Right now, the best smartphones for taking photos are the Nokia Lumia (the Lumia 1020) and also the iPhone 5S.
The worst are the cheap smartphones that cost little because they save on the quality of non-vital accessories for a phone like the camera.
