Does a high-resolution camera produce better imaging results?

 Resolution is the precision of the screen image and refers to the number of pixels that the monitor can display. Since the points, lines, and surfaces on the screen are all made up of pixels, the more pixels the monitor can display, the more detailed the picture will be. Similarly, in the concept of industrial cameras, the resolution is also expressed by the number of pixels. In the same field of view, the higher the resolution, the more information is displayed, the higher the recognition accuracy, and the more details of the image can be seen clearly, so resolution is one of the very important performance indicators.

So, does a camera with a higher resolution necessarily have better image results? Let’s look at the picture below first.

We can see from the picture that in the same display area, the image quality of the picture taken by a camera with a higher resolution is indeed much better in terms of overall clarity and picture details. Therefore, from this perspective, without considering the influence of other factors, the size of the resolution is directly proportional to the quality of the image effect.
So what other factors will be included?
In fact, there is not a simple one-to-one correspondence between pixels and image sensor (CCD or CMOS) photosensitive units. Image sensors with the same number of pixels have different area sizes. The larger the area, the larger the size of a single pixel, and the more light intensity information it can accept. The probability of highlight overflow and noise is reduced, and the photos generated are usually closer to reality. , the image quality will be better. On the contrary, the smaller the size of the image sensor, the smaller the size of each pixel, the fewer light signals it can sense, the small number of photoelectrons, and the large fluctuations. The signal needs to be amplified during the photoelectric signal conversion process, and the signal and noise are together. Zooming in will easily produce image noise, thus affecting image quality. Moreover, the small size of the sensor and the large number of pixels will cause the spacing between pixels to be too dense, which will also cause an increase in image noise.
From this point of view, it is undesirable to blindly pursue high pixels while ignoring the size of the image sensor, and it may even do more good than harm.
To sum up:
1. High pixels do not necessarily bring high image quality, and too high pixels have a negative effect on improving image resolution, sensitivity, noise control capabilities, etc.; 2. The size of the camera's photosensitive
element The size basically determines the grade of the camera. For example, the CCD of high-end DC must be larger than that of low-end. 3.
Regardless of CMOS or CCD, the larger the area of a single pixel, the larger the heat dissipation space and the stronger the noise control ability. At the same time, the less the pixel is affected by diffraction spots, the better the imaging effect will be;
4. Whether high pixels can bring high image quality depends on whether the area of a single pixel can still produce high enough resolution at the commonly used minimum aperture value. , while ensuring imaging clarity, the higher the pixels, the richer the details of the photo, the clearer the layers, and the higher the image quality.