So you shot the photo with the 12 megapixel camera in your phone but the image doesn’t look high res?
That’s because all megapixels are not created equal.
For years camera (and mobile phone) manufacturers have been impressing us with the increasing number of megapixels in their cameras. A 12 megapixel camera certainly sounds high resolution and capable of producing an image worthy of gracing the cover of a brochure. But not necessarily so.
The number of megapixels isn’t the only factor in a camera’s resolution. The size of the camera’s sensor makes the difference. A larger camera like a DSLR will have a much larger sensor than a smaller point-and-shoot camera or mobile phone. The larger sensor will accommodate larger pixels. Hence, larger camera, larger sensor, larger pixels, better resolution.
This is why those highly hyped megapixels by themselves don’t necessarily make for better pictures. A better camera with a large sensor will produce a better image than a smaller, low end camera with a small sensor, even if both boast the same number of megapixels.
Read a more in-depth article at: http://www.digitaltrends.com/photography/image-sensor-size-matters/#ixzz2ZEv1a070