How to adjust the white balance

Question 1: how to adjust the white balance in how to adjust the white balance on this issue have to mention the point is the color temperature, in black and white photography does not exist in white balance such a concept, this concept is the color photography in the shooting by the color temperature and the impact of color casts. Color film by the introduction of a variety of environments so as to solve the problem of white balance (for example, for outdoor daylight type; indoor or night tungsten, incandescent, etc. ...... more than one type of film within the type of film). When digital cameras appeared, white balance can be adjusted directly on the camera, (digital camera web settings also have daylight, tungsten, incandescent, fluorescent, customized, etc., automatic white balance ...... a variety of settings) more convenient. Usually the auto white balance can handle most of the shooting. OK ~ here we come to talk about the relationship between color temperature and white balance ...... White balance, literally white balance. What is white? This involves some knowledge of color science, white is the light reflected to the human eye due to the same ratio of blue, green and red color light and has a certain brightness of the formation of the visual response. We all know that white light is composed of red, orange, yellow, green, green, blue, purple seven colors of light, and these seven colors of light and red, green, blue primary colors in different proportions mixed to form, when a light in the three primary colors of the same proportion of the composition of the time, customarily referred to as achromatic, black, white, grey, gold and silver reflected light are achromatic. Common understanding of white is not contain color components of brightness. White or other colors seen by the human eye with the object's own intrinsic color, the color temperature of the light source, the object's reflective or transmissive properties, the human eye's visual sense and many other factors (see the "Principles of Color"), as a simple example, when colored light irradiation to the achromatic object, the object reflects the color of the light color and the color of the incident light is the same color, both red light irradiation of the white object is red, two or more colored light irradiated at the same time to the When more than two kinds of colored light irradiation to the achromatic object, the object color is additive effect, such as red light and green light irradiation of white objects at the same time, the object is yellow. When colored light irradiation to colored objects, the object color subtractive chromatic effect. If the yellow object in the magenta light irradiation presents red, in the cyan light irradiation presents green, in the blue light irradiation presents gray or black.

Another very important concept to understand before understanding white balance is DD color temperature. The so-called color temperature, in short, is quantitatively Kelvin temperature (K) to express the color. The famous British physicist Kelvin that, assuming that a black body material, to fall on all the heat absorbed, without loss, but at the same time will be able to generate all the energy to "light" form of energy release, it will be subjected to the heat of the high and low and become a different color. For example, when a black body is subjected to heat equivalent to 500-550 ℃, it will turn into a dark red color, and when it reaches 1050-1150 ℃, it will turn into a yellow color, and when the temperature continues to rise, it will take on a blue color. The color composition of the light source is with the black body subjected to the thermal temperature is corresponding to the color temperature of any light is equivalent to the black body emits the same color when subjected to the "temperature", this temperature is used to indicate the characteristics of a certain color of light in order to distinguish between the other, which is the color temperature. This is the color temperature. The best example of the black body theory is the black iron that turns red in the furnace temperature during the process of iron smithing. The phenomenon of color temperature is very common in daily life, and I believe that people are not unfamiliar with it. The light emitted by tungsten filament lamps has a yellowish tint due to its low color temperature. Different street lamps also emit different colors of light, and the flame of natural gas is blue due to its high color temperature. The color temperature of a cloudless blue sky is about 10,000 K, a cloudy day is about 7,000 to 9,000 K, the color temperature under direct sunlight on a sunny day is about 6,000 K, the color temperature at sunrise or sunset is about 2,000 K, and the color temperature of a candlelight is about 1,000 K. It is not difficult to find out the law: the higher the color temperature, the more bluish the color of the light, the lower the color temperature, the redder the color. A color light than other color light color temperature is high, the color light than other color light blue, and vice versa is red; similarly, when a color light than other color light blue color temperature is high, and vice versa is low.

White Balance is the English name for white balance, where the color of an object changes due to the color of the light it is projected with, and the color temperature of the photos taken under different lighting conditions can be different. For example, photos taken under tungsten lighting may appear yellowish. Generally speaking, CCDs do not have the ability to automatically correct for light changes like the human eye does. Some of the images below show different images under different colors of light.

The images are bluish when natural light is used and white balance is imposed. If you use white balance under light, the image has a bluish hue ...... >>

Question 2: What does photographic white balance mean? How to adjust it? White balance is an extremely important concept for cameras.

? The so-called white balance is the camera's reduction of white objects. When we watch this big world with our naked eyes, in different light, the feeling of the same color is basically the same, for example, in the morning when the sun rises, we look at a white object, feel that it is white; and we see in the night under the dim light, see the white object, feel that it is still white. This is due to the growth of human beings from birth onwards, the human brain has been on the color of objects in different light has also been adapted. However, as a camera, there can be no human eye adaptation, in different light, due to the CCD output imbalance, resulting in the camera color reproduction distortion: either the image is blue, or red, as shown in the figure.

? The image in the middle of the figure below is normal color reproduction, while the image on the left side of the obvious blue, the right side of the image is reddish, so the left and right side of the image for the white balance of the image is not normal.

? In order to understand white balance, it is necessary to understand another important concept: color temperature. Color temperature, in short, is the quantitative representation of color in terms of Kelvin temperature. When an object is heated to a certain temperature by an electric light or the sun, it will emit a certain amount of light, which not only contains the component of brightness, but also contains the component of color, and the higher the color temperature, the more blue components, the image will be blue; on the contrary, the lower the color temperature, the more red components, the image will be red. Therefore, if the light irradiating the object has changed, then the color of its reflection will also change, and this change is reflected in the camera, it will produce in different light color reproduction of different phenomena. The following table shows the color temperature under some light conditions.

? Light Source Color Temperature (K)

? Candle 2000

? Tungsten lamp 2500-3200

? Carbon rod lamp 4000-5500

? Fluorescent lamps 4500-6500

? Daylight (average) 5400

? Daylight on cloudy days 6500-7000

? Daylight on cloudy days 12000-18000

? As seen in the table above, the difference in color temperature between different light is very large, resulting in different color reproduction of the camera in different light. In order to solve this problem, nowadays the camera has a white balance correction function to compensate for different color temperatures, so as to truly restore the color of the shooting object.

? Nowadays, camcorders are equipped with automatic white balance and manual white balance functions. Auto White Balance allows the camera to automatically correct the white balance within a certain color temperature range, the color temperature range of the automatic correction in the 2500K-7000K, more than this range, the camera will not be able to automatically correct the color distortion caused by the shooting screen, then you should use the manual white balance function to correct the white balance. Please refer to the related article in the Tips & Tricks section for more details.

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Question 3: How to correct white balance in Photoshop You can try Shortcut: Ctrl+Shift+B, Auto Color Try!

Question 4: How to accurately adjust the white balance of the SLR First rushed to take a picture of a pure white object, can be a white wall, white paper or white balance board (this thing is sold online). Then choose custom white balance in the function option to set this kind of photo as the base white. Then choose custom white balance in the white balance options. If you can't focus you can choose to focus manually or press the shutter halfway on an object with a dividing line to lock focus and then turn around and take the shot.

It's that simple.

Question 5: How to adjust the white balance indoors There are many color temperatures for energy saving lamps, commonly used 6400K, 4100K, 2700K. 2800K for tungsten lamps, similar to 2700K. You take pictures, you must understand the "white balance". Simply put: white balance, is to let you tell Dan camera, the scene at the time of the white hue, more color temperature; so that the photo (negative red, green, blue degree of sensitivity) to be consistent with the scene at the time. If the scene is 4000K, you hard set to "tungsten" 2800K as the standard white, then the photo is bluish. You want yellowish photos, you should set the white balance color temperature higher than the scene; for example, the scene 4100K, you set to 6400K

Question 6: How to control the manual white balance? Manual white balance gray objects (such as gray board) or white objects (such as the back of the gray board) area should occupy at least 2/3 of the size of the viewfinder, manual setting of white balance does not require the camera to focus on the reference, so you can change the camera to manual focus mode, set the lens to infinity focus, just take a business card can be put together in front of the lens to complete the manual setting. To set the white balance manually be careful to turn off the camera's exposure compensation, especially the positive compensation. If the camera is compensated at +0.5 stops to set white balance on white objects, it will fail with "no Gd". However, the camera can still read the white balance data correctly at ISO200 with -3 stops of compensation. However, negative compensation at high ISO will result in incorrect white balance data. So it is better to turn off the exposure compensation when setting the manual white balance.

Correct use of white balance:

When using flash photography, because the color temperature of the light emitted by the electronic flash is basically the same as daylight, so the white balance should be set to daylight, even when shooting night scenes should also be the same, so that the settings of the close-up figures of the color reproduction is also better, and the distant lights in the photo is generally shown as a warm yellow, which is preferred by most people. If you are shooting a night scene with only distant lights and no close-up people, set the white balance to incandescent. Don't use auto white balance when photographing flowers, just adjust it according to the light source at the time. If you shoot flowers in daylight and set the white balance to incandescent, you can shoot white flowers with some blue color. Nowadays, school classrooms and offices are basically lit by fluorescent lamps. Fluorescent lighting looks white, but in fact it is our eyes in the "automatic white balance".

The spectrum of light emitted by fluorescent lamps is not a continuous spectrum, and can only be represented by an approximate color temperature of about 4000K. When you shoot under fluorescent light, you can set the white balance to fluorescent light; if you think the photos are a bit greenish, you can also set the white balance to daylight, and then add a special fluorescent light filter on the front of the lens, which is magenta in color, but it is not often sold on the market.

The most complex light is the first mixed light source, and the most feared of the mixed light sources is the involvement of fluorescent lamps. There are many types of fluorescent lamps, and their color temperature varies greatly. If there is a dominant light source in the mix, such as a powerful enough flash, then the white balance should be set to flash mode. If the light mix is 50/50, the color temperature should be measured using a gray plate. If there are incandescent lights mixed at this time, such as foreground fluorescent, background incandescent or vice versa, you can only take care of one light source and nothing else. Alternatively, if you want to use a shortcut to solve some of the problems with artificial light sources, you can use auto white balance, but under incandescent light use 80B to raise the color temperature from 3000K to 4400K so that the camera detects the change in color temperature very accurately. Similarly, under fluorescent light you can use a fluorescent light correction lens (FLD) to make the camera's auto white balance work properly, just like a film camera.

In some special cases, it is possible to intentionally give the camera a false white reference point, so that the colors of the whole picture run wild in the opposite direction. As with creating special image effects, it is also possible to intentionally use incorrect white balance settings to enhance the color language and achieve special color effects in portraits or landscapes.

Question 7: How to adjust the white balance of the Canon 650D There are three ways to set the white balance of the Canon EOS 650D

A. Directly press the cross navigation key on the right side of the LCD screen up the WB to set the white balance through the wave wheel

B. Press the quick-control shortcut button "Q" on the right side of the LCD screen, and set the white balance through the cross navigation key. Set the white balance through the cross navigation keys

C. Shoot in RAW format, and adjust the white balance later through PS and other software

Question 8: Give an example of the adjustment and use of a "white balance"? A few concepts of white balance

Many people are not very clear about the concept of white balance, and do not know how to correctly set the adjustment, so many first-time users of digital cameras are not satisfied with the color of the photos taken. To truly grasp the understanding of white balance, we first look at the following concepts.

Different light sources emit different shades of light. Different light tones are described by the color temperature, the unit is the Kelvin (K), it is defined as follows: at room temperature to an ideal piece of pure ferrous metal material heating, as the temperature rises objects will show a different color, people present a different color under the temperature called color temperature, the standard to define the tone of visible light. The color temperature of a cloudless blue sky is about 10,000 K, the color temperature of a cloudy day is about 7000-9000 K, the color temperature of a sunny day under direct sunlight is about 5600 K, the color temperature of a fluorescent lamp is about 4700 K, the color temperature of a tungsten iodine lamp is about 3200 K, the color temperature of a tungsten filament lamp is about 2600 K, the color temperature of a sunrise or sunset is about 2000 K, the color temperature of a candlelight is about 1000 K.

In different light conditions, the temperature of a black metal substance heats up. p> In a variety of different light conditions, the color of the target object will produce changes. In this regard, people are most sensitive to changes in white objects: in the indoor tungsten light, white objects will look with orange *** tone, in such lighting conditions out of the scene will be yellow; but if it is in the blue sky, it will be with blue *** tone. In such lighting conditions the scene will be bluish. In order to minimize the impact of external light on the color of the target, in different color temperature conditions are able to restore the original color of the target, which requires the digital camera color correction to achieve the correct color balance. White objects due to the reflection of the entire visible spectrum, so the digital camera as a standard for adjusting, in the manual white balance adjustment, the white balance mechanism will try to a certain range in addition to pure white other than the other tones of pure white modulation, if this part is yellow, it will strengthen the blue to reduce the picture of the yellow *** color, in order to get a more natural color. As long as the digital camera correctly restores the white color of the object when shooting white objects, it can correctly restore the other colors of the object under the same lighting conditions. Therefore, it is called white balance adjustment. It is divided into automatic and manual adjustments, with manual being more accurate and having a wider range of adjustment. Traditional cameras, on the other hand, rely on the use of different films (daylight type, light type) or different color filters to achieve the correct color balance.

To get the color reproduction is more correct, it is necessary to shoot the scene under the light source for manual white balance adjustment, the specific operation: If the shooting site has a pure white object (such as pure white walls), then the lens to focus on it filled with the camera viewfinder, to adjust the manual white balance (different machines to adjust the method is different, you can refer to the manual, generally hold down the manual white balance button 1-2 seconds system prompted to finish) -2 seconds system prompts can be completed), you can. See what changes in the screen (DSLR digital cameras can not see the effect of adjustment instantly)? If there is no pure white object in the shooting scene, bring a piece of white paper to adjust the white balance effect is better, but be sure to pay attention to the light in the scene being photographed. Of course, you can also use the principle of manual white balance to set the effect we need to bias color. Such as: point the camera at blue objects (such as blue sky) to adjust the white balance to shoot the sunrise, sunset and so on.

Question 9: How to adjust the white balance of the camera So, for the white balance that you have neglected, let me introduce it to you, but my introduction will be as simple as possible, and will be very practical. How do you adjust the white balance? The reason we adjust white balance is to restore accurate colors to an image! This begs the question, why do you need to get accurate colors when you shoot? In your everyday photography, you may have noticed that sometimes objects, even though they look normal on set, turn out to be off-orange, off-blue, and off-yellow when you shoot them. This is because: wedding studio in the shooting of the object, there are from different light sources, and different light sources have different "color" (we also called "color temperature"). When fluorescent lighting under the actor, shooting out will become blue; while incandescent lighting under the object is added a yellow tint. Therefore, it is best to set the camera to increase the color temperature when the external light is cool (blue or green), and to set the camera to decrease the color temperature when the external light is warm. Auto: This is the camera's best guess at the current light when shooting through the lens. You will find that this mode works in many situations. Incandescent: This mode is usually represented by a small light bulb and is typically used for indoor shots to cool the colors in the photo. Fluorescent: Compensates for cold light and warms up the light in your photography. Daylight: not all digital cameras have this setting as it is just a very normal white balance setting. Cloudy: Usually this setting compensates for warm colors more than Daylight mode. Flash: the camera's flash is a very cold light, when you turn on the flash turn on this mode, Full Shadow Photography makes your photography warmer Shade: shooting in the shadows is colder than shooting in direct sunlight, so this mode will make your photos warmer. Using the preset white balance settings will give you very accurate results in many cases. But some more advanced digital cameras can set a manual white balance to give you more accurate colors. This is typically done by telling the camera what is truly white in the current situation.

Question 10: How to adjust white balance in photoshop You're in photography! There are several ways to adjust the white balance in ps

1. You can select the middle eyedropper in the curves tool and go to the middle of the image to tap the middle of the image to adjust the image

2. Adjust the photo off-color through the color Kawaii balance

3. Control the color temperature by adding a photo filter to the photo

4. Adjusting the color through the optional color adjustment can achieve the best

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