How to adjust the white balance of the camera when shooting outdoor scenes in sunny, cloudy and cloudy environments?

Which mode to choose mainly depends on the environment and light you are shooting.

1. If shooting outdoors on sunny days, you can choose automatic, outdoor and sunshine modes. The white balance function will enhance the yellow color of the image to correct the color deviation. If indoor mode must be set in this environment, white objects will appear blue.

2. If shooting in rainy days or indoors, you can choose indoor, cloudy and bright modes, and the white balance function of DV will enhance the blue color of the image to correct the color difference. If outdoor mode must be set in this environment, white objects will appear yellow. In addition, when shooting indoor tungsten lamp, it can be set to indoor mode or lighting mode.

3. The automatic mode is to automatically set the white balance after being detected by the DC white balance sensor. Only when this mode is used outdoors can color reproduction be more accurate. In other shooting environments, automatic mode color reproduction is not accurate enough. Please pay attention to the future shooting.

4. When the external conditions exceed the automatic adjustment function of white balance, the image will appear slightly red or blue; Even if there are more than 1 light sources in the automatic white balance adjustment function, the automatic white balance adjustment may not work properly. In this case, manual mode is needed to adjust the white balance. Before manual adjustment, you need to find a white reference object, such as white paper. Some DVs have a white lens cover, and the white balance can be adjusted as long as the white lens cover is covered. The operation process is roughly as follows: adjust the zoom lens of the camera to the wide-angle end, and cover the lens tightly with a white lens cover (or white paper); Adjust the white balance to the manual position, aim the lens at the clear sky, be careful not to directly face the sun, and zoom in until the whole screen turns white; Press the white balance adjustment button until the manual white balance sign in the viewfinder stops flashing (different machines have different representations), and then the manual white balance adjustment is completed.

Special usage of white balance

Some special effects can be obtained by manually adjusting the white balance, for example, manually adjusting the white balance for a pink object makes the picture cold.

You can also get some artistic effects by manually adjusting the white balance. When shooting the red sunset, you can shoot a picture full of warm atmosphere by manually adjusting the white balance with blue as the reference. If you want to shoot a cool sunset scene, you can manually adjust the white balance of the red reference. If the white balance of DV is set to the automatic position, the camera will misjudge the warm color temperature of the sunset as indoor, thus compensating the blue color of the picture and reducing the red color, completely destroying the original warm atmosphere of the sunset.

In the process of digital camera shooting, many novices will find that the light of fluorescent lamp is white to people, but it is a little green when photographed with digital camera. Similarly, if it is under an incandescent lamp, the color of the image will be obviously red. The human eye can see that it is white because it has been corrected. It would be nice if the color of the image taken by the camera is exactly the same as that seen by the human eye. However, because the CCD sensor itself does not have this function, it is necessary to correct the output signal, which is called white balance.

Therefore, white balance control is to make the color of photos taken under various light conditions completely consistent with the color of the scenery seen by human eyes through image adjustment. Simply put, white balance is a function that defines "white" as "white" regardless of the ambient light. Color is essentially an explanation of light. What looks white under normal light is not necessarily white under dark light, and "white" under fluorescent light is also "non-white". To learn more about white balance, we must know the color temperature.

Color temperature is an important part of photography, but many photographers simply don't know its true meaning. In the eyes of ordinary readers, color and temperature are two different things, but in the field of photography, the light source is always defined according to its color temperature. The unit of color temperature is Kelvin. Like Fahrenheit and Celsius, Kelvin is a unit of temperature measurement. The relationship between color and Kelvin temperature originates from a blackbody radiator (heating it until it emits light), and the color presented at different temperatures is the color temperature. When this black object is heated and starts to glow, it will turn dark red. If heating is continued, it will turn yellow, then white and finally blue. This color temperature phenomenon is very common in daily life, and I believe everyone is familiar with it. The color temperature of cloudless blue sky in Wan Li is about 10000 K, that of cloudy days is about 7000 ~ 9000k, that of sunny days is about 6000 K, that of fluorescent lamps is about 4500 K, that of tungsten lamps is about 2600 K, that of sunrise or sunset is about 2000 K and that of candlelight is about 1000 K.

Color temperature is a white balance problem of digital cameras, and it is also a headache for many photographers. Under different lighting conditions, the color of the target will change. In this respect, the change of white objects is the most obvious: under indoor tungsten lamp, white objects will look orange, and the scenery photographed under such lighting conditions will look pale yellow; But if it is under the blue sky, there will be blue tones. The scenery taken under such lighting conditions will be blue. In order to minimize the influence of external light on the target color and restore the original color of the target under different color temperature conditions, digital cameras are needed to correct the color to achieve the correct color balance, which is called white balance adjustment.

Nowadays, digital cameras have white balance sensors, which are usually located under the lens. The white balance mechanism will try to turn white into pure white. If the brightest part is yellow, it will strengthen the blue to reduce the yellow in the picture, so as to obtain a more natural color. Digital cameras can correctly restore other colors of white objects under the same lighting conditions as long as they correctly restore the white objects when shooting them.

At present, there are generally 4 ~ 5 modes for white balance adjustment of digital cameras, which are slightly different due to different manufacturers, but there is little difference. Canon's digital cameras are generally divided into automatic, daytime, cloudy, incandescent, fluorescent and other modes. In daytime mode, the white balance function of the digital camera will enhance the yellow color of the image. When shooting outdoors on sunny days, you can set the white balance function in daytime mode. If shooting indoors, it should be set according to the indoor light source. Generally, there are tungsten lamp and fluorescent lamps. In fluorescent light mode, white objects will appear blue. In tungsten lamp mode, the white balance function of the digital camera will enhance the blue color of the image. If the white balance is set to daytime mode by mistake, the picture color will become too yellow.

The photo is greatly influenced by the light of the shooting place. White balance is the function of adjusting this point. When the color is unnatural in automatic mode, you can get better results by choosing "daytime", "tungsten lamp" and "fluorescent lamp" according to the light of the shooting place. If you need more realistic colors, you can set them manually.

In addition to automatic and manual white balance, some advanced digital cameras also provide "white balance surround" function. Generally speaking, this function is to use different white balance modes to take three photos at a time, one is normal, one is blue, and the other is red, which is convenient for users to compare and choose, making shooting more flexible.

Indoor and outdoor mode is only for sunny days, outdoor and indoor lighting with about 60W tungsten filament bulbs. These two typical white balance adjustments under light tone conditions can not represent all white balance adjustments in indoor and outdoor environments, and have no universal significance. Therefore, in some special color temperature environments, the white balance is still adjusted manually.

For example, when shooting a red sunset, you can shoot a picture full of warm atmosphere by manually adjusting the white balance with blue as the reference. If the white balance of the digital camera is set to the automatic position, the digital camera will misjudge the warm color temperature of the sunset as indoor, thus compensating the blue color of the picture and reducing the red color, completely destroying the original warm atmosphere of the sunset. On the contrary, by manually adjusting the white balance with the red reference, you can take a picture with a cool blue tone.

Manual white balance adjustment mode is required under light conditions beyond the automatic white balance adjustment range. Before manual adjustment, you need to find a white reference object, such as pure white paper-something like that. Some digital cameras are equipped with a custom white balance function, so you can adjust the white balance as long as you face a blank sheet of paper. The operation process is roughly as follows: 1. Adjust the zoom lens of the digital camera to the widest angle (short focal length position); 2. Place the white paper; 3. Adjust the white balance to the manual position; 4. Aim the camera at the clear sky, be careful not to face the sun directly, and zoom in until the whole screen turns white; 5. Press the white balance adjustment button until the manual white balance sign in the viewfinder stops flashing, and then the manual white balance adjustment is completed.

Some special effects can be obtained by adjusting the white balance manually, and some color cast effects can be obtained by adjusting the color temperature.

Generally speaking, the white balance function of digital cameras can meet the needs of most situations. Readers should keep practicing in the process of shooting creation, deepen their understanding of white balance adjustment according to their camera characteristics and shooting environment, and make full use of the advantages of digital cameras to take satisfactory photos. Even if the white balance effect is not satisfactory, don't worry, computer post-processing can also relieve these worries for you.