When Canon 600 takes pictures, the light is dim, so it is impossible to press the shutter to take pictures. What happened?

When the camera can't focus in a "dark" environment, the shutter won't start.

You can take the following measures to improve the success rate of focusing and start taking pictures:

1, increase the ISO value (for example, to ISO 400,800, 1600 or even higher).

ISO value is a measure of the sensitivity of digital camera to light, which is usually expressed by ISO value. The greater the value, the stronger the photosensitivity, and the smaller the value, the weaker the photosensitivity.

When there is insufficient indoor light or shooting night scenes, using high ISO value can greatly increase the success rate of focusing. But the noise of the photo will also increase accordingly.

2. If the ambient light source is dark, you can increase the exposure value (such as ++ 1EV, ++2EV) to highlight the clarity of the picture.

Extended data:

Canon 600 can't be photographed by the shutter because the light is dim when taking pictures. The solution is:

1. The lens is too close to the object to focus. Generally, the working distance of the lens should be above 45CM, and it should be written on the lens.

The light is too weak to focus.

3. Open the reflector for pre-elevation, and press the lens twice.

4, set to manual focus, if you can shoot, it is 1 or 2; Press twice to shoot is 3; Otherwise, the camera is broken.

5. If the light is dim, the image will be unclear, so the camera will automatically refuse to take pictures. In this case, one is to turn on the flash, and the other is that the flash cannot be turned on because of the shooting nature, so please increase the IS0 parameter, such as 800, 1600, to compensate for the exposure.