What does the white balance shift/wrap function do? How to use this function when shooting?

The main function of white balance offset is to fine-tune white balance. Adjusting the color temperature at a given color temperature is also a continuation function. These two functions are actually two auxiliary functions of camera white balance setting, which are to correct the picture with slightly deviated tone and the picture with still deviated tone after camera white balance correction.

1, white balance offset

The light in the actual shooting scene is often very complicated. When the automatic white balance or the scene white balance still cannot meet the requirements, it is necessary to manually fine-tune the white balance to make the color temperature of the photo more realistic, which is the role of white balance offset.

2, surrounded by white balance

This function can be used in specific white balance modes such as automatic white balance or scene white balance, and three photos with different color temperatures can be taken at roughly the same interval for later selection.

3. Specific application

In most cases, the default automatic white balance (AWB) setting can bring you good results. However, like all other automatic settings, automatic white balance has its own limitations.

It can only work normally in a relatively limited color temperature range, and it often makes the picture orange when shooting indoors at night; And when shooting at dawn, it will also make the picture blue.

Camera manufacturers are also very clear about this, so in addition to automatic white balance, cameras will also provide a series of white balance presets to cope with more specific lighting environment.

Extended data:

General law of white balance adjustment

1, the color of the scene needs to be adjusted correctly with white paper. There are different shades of white paper, such as green copy paper and yellow white newspaper. Different shades have different effects on the tone of the picture. The rule is that the chromaticity of white paper and the chromaticity of the picture are complementary colors.

Balance with yellow and white paper and the picture will be blue.

After the chromaticity of white paper is determined, it can't be changed at will in the same scene, let alone find a white object to adjust the white, otherwise the color of the picture will not be uniform.

2. Besides the choice of white paper, the direction of white paper is also very important.

In short, when using white balance to control the picture color, we should always pay attention to the chromaticity (whiteness) of white paper and the chromaticity (color temperature index) of light shining on white paper.

Baidu encyclopedia-white balance

Baidu encyclopedia-white balance adjustment