How to set the aperture, shutter and iso of the camera when people are walking and the light is dim?

The conditions are too general and the light is dim. How dark is it? Can you use a flash? Is the purpose of shooting news, life or taking a group photo? What kind of camera, lens and aperture do you use?

Generally speaking, people's normal walking needs a shutter of 1/60 to 1/80 to shoot clearly. But after setting this shutter, it depends on whether your maximum aperture can meet the needs of correct exposure. If the ISO value is too high, it will increase noise and reduce image quality. It depends on your camera performance and your requirements for image quality. What is the maximum acceptable ISO?

Therefore, the aperture, shutter and ISO value should be determined according to your specific shooting environment and shooting purpose, and the experience value of others may not be suitable for you. If it is an important shooting, I suggest you go to the scene to take a few photos in advance to determine the most suitable setting combination. I can give you a suggestion, that is, shoot with automatic gear first, then check the shutter aperture combination obtained by automatic metering of the camera, and then manually increase or decrease the shutter according to the shooting effect. If you can use a flash, it shouldn't be difficult to shoot.