SLR, photography of speaking activities in the classroom at night, how to adjust various parameters? I was in a hurry to take a picture, but the landlord Xiao Bai chose autofocus mode and shutter spee

SLR, photography of speaking activities in the classroom at night, how to adjust various parameters? I was in a hurry to take a picture, but the landlord Xiao Bai chose autofocus mode and shutter speed to focus. The larger the aperture, the better, that is, the smaller the value, the better! ISO depends on your camera. For Quan Huafu, you can go to 1600-2000 at the highest. If not, suggest 400-600. Of course, it also depends on the lighting conditions. Although it is night, it is indoor after all. If flash is allowed, flash can be used.

There are no fixed parameters for this, it should be combined with the lighting conditions of your site! ! I suggest you use P gear, turn on the flash and adjust ISO. The aperture shutter speed is automatically calculated.

You can also use Av file, that is, turn on the flash, set ISO, you set the aperture to the maximum (minimum), and the shutter speed is automatically calculated.