When the photo is taken with a digital camera, the light is reflected from lens and falls on a digital sensor. These sensors are nothing more than computer chips, called CCD, CMOS, etc. ... , Depending on the technology used by the camera. The term megapixel is a measure of the number of elements of the camera's sensor. The higher the megapixel number, the better the resolution of the control panel. As I explained ...
If we wanted to print quality photo 'we would need a camera with a resolution of at least 2 megapixel .. even if the machines on sale today are much higher, reaching up to 4 megapixel minimum.
If you choose to print a low-resolution photos, remember that the photograph must be interpolated that is expanded beyond its size, and then you will see the pixels in the press, degrading the image quality. The solution then is to have a camera with a resolution suitable for printing that you're in charge.
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