How high pixels does a digital camera need to be a qualified camera? What is the standard pixel?

Pixel is not the main factor in choosing a digital camera.

First look at the relationship between pixels and photo size:

3 million copies of 3R and 4R photos are enough;

It costs about 5 million to print A4 format photos;

8 million pixels is enough to print or spray a photo larger than A3 (calendar size) format.

Second, the key factors affecting the quality of digital photos:

1, the size of CCD area.

Why is the photo quality of ordinary household digital cameras far inferior to that of digital SLR cameras-

That is to say, the CCD area of digital SLR camera is much larger than that of home computer. The more information you receive, the clearer the photos will be.

The CCD area of common household machines is generally11.8, 1/2.5 inches, etc. Under the same conditions, a CCD with an area of11.8 is certainly better than a CCD with an area of 1/2.5 inches.

2. Diameter and mass of the lens.

World-famous lenses are highly respected for their high production quality and good imaging.

With a large lens diameter, the luminous flux is naturally larger than that of a lens with a small diameter. The luminous flux also determines the amount of light information received by the photosensitive element.

The lens of a home card machine is generally smaller than that of a home portable machine. Therefore, the photo quality of the card machine is generally not the same as that of the grade notebook computer.

If the picture quality is high, unless you value the fashion and thinness of the card machine, choose a portable computer.