The faster the camera shutter, the better the shooting quality or the lower the better?

It depends on the specific situation. If it is still shooting, that is, regardless of factors such as motion and vibration, the shutter mainly determines the exposure by combining with the aperture. A long enough shutter can ensure that the sensor or film is fully sensitive without opening the aperture. Due to the design and manufacturing problems of the lens, the imaging with large aperture is often not particularly excellent, and the shallow depth of field effect caused by large aperture sometimes has an impact. Therefore, the combination of small aperture and long shutter is often better than the combination of large aperture and short shutter. Of course, if it is a digital camera, too long shutter time will produce thermal noise, which will also affect the shooting quality. If shooting in motion, the shutter time will be subject to many restrictions, such as the moving speed of the subject, or the safety shutter problem when shooting by hand. At this time, it is impossible to complete the shooting with a long shutter, let alone the quality.