What is the relationship between pixels and photo quality?

Pixel is the most important index to measure a digital camera. Pixel refers to the resolution of a digital camera.

Depending on the number of photosensitive elements on the photoelectric sensor in the camera, one photosensitive element corresponds to one pixel. Therefore, the larger the pixel, the more photosensitive elements, and the greater the corresponding cost.

The image quality of a digital camera is partly determined by pixels. When they are larger than a certain size, it is meaningless to compare them with pixels. The pixels of mainstream SLR digital cameras are around1000000, but 5 million pixels are enough for ordinary photography and home use.

The resolution of the monitor we use is limited, generally between 1024×768 and 1920× 1200. If a picture with too high pixels is displayed at this resolution, the picture will be compressed to the size of the current screen, and some pictures will be distorted because of too high definition. The imaging quality mainly depends on the size and quality of camera lens and photosensitive element.

The larger the pixel, the higher the resolution of the photo and the larger the printable size.

Extended data:

Effective number of pixels is called effective number of pixels in English. Different from the largest pixel, the effective pixel number refers to the pixel value that really participates in photosensitive imaging. The value of the highest pixel is the real pixel of the photosensitive device, and this data usually includes the non-imaging part of the photosensitive device, while the effective pixel is the value converted under the zoom magnification of the lens.

Digital pictures are generally stored in pixels, and each pixel is the smallest unit in digital pictures. The larger the pixel, the larger the area of the picture. To increase the area of a picture, if no more light enters the photosensitive device, the only way is to increase the area of pixels.

This may affect the sharpness and clarity of the picture. Therefore, under the condition of constant pixel area, the digital camera can get the largest picture pixel, which is the effective pixel.

When users buy digital cameras, they will usually see merchants advertising that "the maximum pixel reaches XXX" and "the effective pixel reaches XXX". When choosing a digital camera, they should pay attention to the effective pixel of the digital camera, and the value of the effective pixel is the key to determine the image quality.

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