When choosing the most important reference data for digital cameras, what to choose and why?

Personal suggestions and opinions are for your reference: 1. The size of the photosensitive element chip on the camera is the most important to the final imaging effect, not the number of images. For example, the photo sensor chip size of camera A is11.7 inch, with 800 pixels, and the photo sensor chip size of camera B is 1/2.3 inch. The imaging effect of camera a is definitely better than that of camera B. The optical zoom multiple is more than 3-5 times, and the focal length coverage of high-power optical zoom is large, which basically does not damage the image quality, and the size of digital zoom does not need to be considered. (In layman's terms, this kind of zoom is achieved on the premise of losing image quality, and it has no practical value. 3. Is there a rich manual shooting function? Without this function, it is a fully automatic camera. For all kinds of complicated and changeable shooting environments, you can't get accurate exposure by manually adjusting the parameters such as aperture and shutter. You can only deal with all kinds of complicated and changeable shooting environments through various pre-shooting modes in the machine, especially in the case of poor lighting conditions, especially when shooting at night, the imaging effect will not be ideal, and there is a comprehensive manual shooting function, which can integrate more effects you want when shooting, and the fun and space of shooting will be greater. Especially when shooting pure night photos, after manually adjusting the exposure, aperture, ISO and other parameters, the picture obtained is clear and clean without any noise, which is incomparable to the imaging effect of so-called program mode (commonly known as fool mode) cameras such as night shooting mode. 4. It is unnecessary to consider the maximum sensitivity of ISO parameters to household consumer-grade DC. In actual shooting, when the ISO parameter is generally below 320, the picture quality is OK. If this parameter is exceeded, there will be obvious red and green noise in the photo, which will seriously affect the image quality (SLR cameras should consider the maximum sensitivity of ISO parameters). 5. The camera with optical anti-shake function is preferred, which has high practical value and can significantly improve the image blur caused by slight camera shake in actual shooting. The anti-shake functions such as electronic anti-shake and digital image stabilizer are basically deceptive things, which have no practical value and need not be considered. Is it a touch screen? There is no need to pay too much attention to it, which has no effect on the actual imaging effect. Just look back at the difference between pleasing to the eye and pleasing to the eye. On the contrary, a large display will consume more limited power of the camera. 7. For household consumer-grade DC cameras, don't pay too much attention to the existence of wide angle. Wide-angle, the actual imaging effect is never as good as expected. Without wide angle, the actual imaging effect is definitely not as bad as imagined. More importantly, buy a camera.