Pixel: Pixel(in camera) is the tiny photo sites or light receptor of a camera sensor. It collects the light coming from a source.

Camera Sensor pixels Pixel in camera sensor[/caption]

Pixel Quantity: It is the quantity of tiny  light receptor in an image sensor.

If it says the camera is 1 MP (Mega pixel) then the total pixel of the sensor will be 1 million.Higher the pixel in number larger will be the image size.

  • Comparison of higher number pixels image with lower number pixels image

Comparison of the image with different numbers of pixels.                                                                The size of each pixel on a camera sensor can vary depending on the sensor’s physical dimensions and the total number of pixels. Smaller pixels are generally associated with higher-resolution sensors, which can capture more detail but may be more prone to noise and other image quality issues. Larger pixels, on the other hand, can gather more light and tend to provide better low-light performance.                                                 In a phone camera, the sensor is small (and thus pixels are also small). For such a small sensor, the area for the high number of pixels are very less, and thus the higher number of pixels makes the density higher, and for which the required light cannot capture properly by the pixel. So phone camera even with higher pixel cannot make a good-quality image like other camera does.

 Only the higher pixel doesn’t make an image good in quality. The quality depends on other factors also, like the pixel size, light, sensor size, the lens quality used by the camera, etc.