How does Redmi k40 take photos with black background?

1, shoot the black background with spot light.

When we use spot metering to measure the light in the bright part of the picture, the camera's metering system will think that the ambient brightness is too bright, so it will automatically dim the light, so that the photos we take are a little darker than the actual ones. This is similar to our backlight shooting. When we measure light in the bright part of the sky, it is easy to form a silhouette in the dark part of the ground, so when we measure light in the main part of the picture, the scenery outside the main part will naturally darken.

Of course, spot metering is not enough. To make the background darker and darker, we need to adjust the shooting angle. We should choose some dark elements as the background of the picture, such as gray walls, Woods and even shadows. With a dark background, we can better use spot metering to deepen the background and finally take a pure black photo.

If the background is not dark enough, we can also make the background dark by reducing the exposure compensation.

Summary of spot metering: When using spot metering to shoot black background, we need to find a darker background to shoot. If the background is not dark enough, then reduce the exposure compensation appropriately.

2. Take a black background with props.

If we can't find the dark background mentioned above, then we can "create" a dark background ourselves. We can put props such as black cloth and black umbrella behind the subject, and then measure the subject by spot metering. If necessary, we can also reduce the exposure compensation appropriately to achieve the best effect.

Using props to achieve black background is a simple method, suitable for shooting portraits in sheds and outdoor flowers. This is a very practical method.

3. darken the background with a flash.

We can also darken the background by using the flash, increase the shutter speed of the camera, narrow the aperture and use the lowest ISO. This setting can well reduce the exposure of photos and make everything except the focus subject dark or black, thus taking the desired effect.

This kind of shooting needs to master certain skills, and it takes many practical operations to master the tricks. If you use the camera's own flash, the shutter speed will be limited. General synchronous shutter speed is 1/200 seconds. If we use an external flash, the shutter speed setting will not be limited by 1/200 seconds, and it will be easier to shoot a dark background.

4. Use fill light to create a black background at night.

At night, the light is dim, so we can only illuminate the subject with fill light, and then shoot the subject by spot metering, so that we can easily shoot the black background. For example, when we take a portrait with a black background, we can turn off the lights in the room to fill the light for the portrait, which is very convenient and easy to use.

I hope I can help you.