Why is the mobile phone once as high as 1 100 million pixels not as good as the SLR with more than 20 million pixels?

With/kloc-0.0 million pixel mobile phone, it is impossible to win a 24 million pixel SLR when taking pictures. The reasons are related to three aspects. First of all, it is limited by the lens aperture; Secondly, limited by the sensor area; Not only that, but also the resolution of the lens.

The lens aperture of 1 100 megapixel mobile phone is not as high as that of SLR mobile phone, which does not mean that the lens aperture is large. The camera of mobile phone is limited by individual size, and the lens aperture is relatively small. When shooting, the pixels may be higher, and the picture will be more delicate, but the aperture of light transmission is smaller, so the best luminosity cannot be obtained. The lens of the SLR itself is relatively large. In addition to automatic or manual adjustment, the aperture of the lens itself is larger than that of the mobile phone, which makes the quality of the shot image undistorted and the definition is relatively high.

In this case, shooting the same object in the same place, the picture quality of the 65.438+0 megapixel mobile phone is not as good as that of the 24 megapixel SLR. Lens shooting is the knowledge of optical imaging involved in physics, and the fluctuation of light will directly affect the rendering effect of image quality after shooting.

/kloc-0 100000000000000 The sensor area of a pixel mobile phone does not have the principle that wide-angle shooting by SLR will involve pinhole imaging, and the light will be diffracted through the round hole or slit of the camera. Diffraction may be completely negligible from the naked eye, and the sensor of the shooting equipment will not ignore this situation in photo shooting. The sensor area of mobile phone camera is relatively small, and it lacks sufficient "perception" of diffraction resolution. Because of its large area, the SLR sensor can sample the diffraction lens completely and avoid the loss of picture details. Coupled with the sampling of the diffraction lens, there is no direct connection with the pixels of the shooting equipment. Simply put, no matter how high the pixel is, it can't make up for the limitation of the sensor area, which also leads to the fact that the shooting effect of the 654.38+0 megapixel mobile phone is not as good as that of the 24 megapixel SLR.

Of course, although the high pixel of the mobile phone is not helpful to improve the performance of the sensor, it can capture more shooting details under the condition of ensuring sufficient light. The photos taken by 1 100-megapixel mobile phone can be enlarged at will in the later editing, and they can often be kept at 9.7 million pixels even after being greatly cut, which is an advantage that a 24-megapixel SLR camera cannot achieve.

It should be well understood that the resolution of 1 100 megapixel mobile phone lens is not as strong as that of SLR, and the resolution of the lens is affected by the lens group. The more lens groups there are, the stronger the ability to handle the lens is. Not only will there be problems such as distortion and dispersion in the shooting lens, but there will also be problems such as sharp lens change. Depending on the lens group in the lens, 1 100 million pixel mobile phone is relatively strong in pixels, but due to the narrow space, more lens groups cannot be put in the lens, which directly leads to the decrease of lens resolution.

It is the influence of the above three aspects that it is impossible to win a 24-megapixel SLR with a 6.5438+0 megapixel mobile phone. After all, the main function of a mobile phone is communication, and shooting is only its auxiliary function, while a SLR camera is different. Its main purpose is to shoot without communication skills, which we must know in detail.