What should I do if the photo light is too dim?

The light is too dim when taking pictures. The general practice is as follows:

1, use the flash. This can increase the amount of light entering and make the exposure normal. The problem is that it is easy to make the subject lack a sense of hierarchy.

2. Use high sensitivity, that is, set ISO to 1600 or even 6400. This can basically ensure the original flavor, but the light is too dim. The problem will be that the roughness of the photo will increase.

The darker the light, the slower the shutter will be. At this time, the aperture will be increased.