​How to use the light source color temperature to create beautiful wedding photos

How to use the light source color temperature to create beautiful wedding photos

Light related to shadow, related color, related to mood and atmosphere. For photography, the light is the most basic and most important forever. When it comes to color, can't jump off the light. Colour depends not only on the object itself, also related to the light source and the observer. How to make the color of the main elements in the environment in images accurately control, according to the intention of the creator to reproduce or subjectivity performance in the picture? In this paper, the system about the light source color temperature and the concept and principles of the white balance adjustment, and with rich examples to wedding journey and take how ingenious use of the light source color temperature difference during the process of setting the white balance parameters, to achieve the ideal effect, create a beautiful canvas prints.

Part 1: light source color temperature, and the white balance adjustment

1, it is for light source color temperature, used to show that spectral components

Color Temperature (Color Temperature), also known as "light source Color Temperature, it is shows that the spectral composition of thermal radiation light source, Color Temperature can use absolute Temperature (K) (K). To be sure, color temperature is not a sign of object color, brightness is not sign, it shows only the change of thermal radiation light source spectral composition. When actual the spectral composition of light source and the completely radiator (also known as absolute black) in a certain temperature when the spectral components in or close to, with perfect radiator temperature to represent the spectral composition of the actual light source.

In 1848, British physicist begin once in a physics experiment found that the relationship between light and temperature. He put the blackbody radiation (also called absolute black, also known as completely body) in the sealed container for heating, from absolute zero (273.16 ° C) for calculating the starting point, temperature rise per 1 ° C, color temperature rise 1 ° K. So, later, people used to begin the name of the first capital letter K, as a symbol of the light source color temperature unit.

From the table above, color temperature of high and low means the light source spectral components contained in the proportion of different. When the light source color temperature is 5500 k, spectral components contained in the proportion of red, green, blue three colored light is roughly same, then the light on the human visual perception of light, color rendering index up to 100. When the light source color temperature below 5500 k, the spectral composition of light source in the green component remains the same, only the proportion of the amount of red light is significantly higher than the proportion of the amount of blue light. As the light source color temperature value gradually decline, the increase in the proportion of the amount of red light, while the proportion of the amount of blue light gradually reduce. On the contrary, when the light source color temperature higher than 5500 k, spectral components in the green component is still the same, but the proportion of the amount of red light gradually reduced, the proportion of the amount of blue light is gradually rise. Color temperature: the characteristics of each of the high and low marks of the light source color temperature contain different spectral components. Light source color temperature is lower, the more the source of a red; the higher the light source color temperature, the more components of the blue in its light.

2, the white balance for image acquisition device, used to match the light source spectral components, to ensure accurate color reduction

Adjust the White Balance (White Balance), refers to the objects in the same light source, to adjust the three color of digital image acquisition device electrical signals mixed proportion, to that of the actual light source, the spectral composition of coordination, make the scene color normal reproduction or according to his intention to form the best tonal canvas prints. The meaning of the white balance lies in, to ensure that the image acquisition equipment in all light white objects can be reduction is white. Under certain light source to shoot the phenomenon of partial color, can be to correct by adjusting the white balance offset, also can be get by adjusting its unique artistic color effect, specific practices are varied.

1. When the light source color temperature and the balance of camera calibration color temperature (i.e., the white balance) are consistent, the colour of the scenery in the picture normal reduction;

2. When the light source color temperature is less than the camera calibration of balance when the screen is tonal slant orange color temperature;

3. When the light source color temperature is higher than the balance of camera calibration when the picture is tonal slant indigo color temperature.

Part 2:, the filming of the frame color balance control

1, some is not recommended to use automatic white balance

The automatic white balance function of the camera is not absolutely accurate, is not enough to intelligence to understand all of your creative ideas. The color temperature is low or high environment when shooting, if simply using automatic white balance, all the scenery will tend to the effect of the sun at noon, can erase the environmental sense of color and atmosphere. Like to take appearance white or black too, using age gear, we can through adjusting exposure compensation, to correct the deviation of the automatic metering system or directly instead of manual exposure. Also, color temperature on the high side or low large scenes, also suggests instead of manual white balance, or according to the different specific scenarios to select different white balance gear, color to take to person's psychological feeling to take into account the shooting. Sun, for example, in the evening sunset color temperature is very low, can make scenery with a layer of golden yarn dreamy, then if you want to do the whole environment atmosphere, to let the camera's white balance parameter is higher than the actual light source color temperature values, with the white balance parameters of the 5500 k, for example, around 3000 k to photograph the sunset scene, can get warm yellow tones. If you are in the snow or shooting night, want to highlight the feeling of cold, generally makes overall image tone slant blue, then the parameters of the white balance is lower than the actual ambient light color temperature, can present a cold tone.

It is important to note that people don't usually handle into cold tone color of skin, in high temperature environment, want to make the environment present a cold feeling, often with low TPS source for people to fill light color, white balance values by the fill light Settings, so that the whole scene can slant blues, and normal skin. When making this big changes in temperature contrast scenes, are often used to make up for the flash of light output power is hard to achieve the goal of balanced character color, general assistant can show close fill light. Can a picture of a single flight Jinglier empty scene, for later will fill light source.

2, create a colorimetric several kinds of methods

Create a colorimetric is taken wedding often use a kind of art expression, the majority of the changes in temperature contrast is environment by using different light source color temperature difference. Here we list several ways.

Before sunrise, sunset sky color temperature on the high side, the metropolitan present a violet, at this time, the light of the sky and ground lights than roughly 1:1, appear in the camera is the sky and the buildings are details and color, the overall effect is luxuriant, dream. Sky high color soft ground source of low colour temperature formed a great contrast of changes in temperature. When the character in this environment, the need to do is to control the fill light source color temperature, make the figures highlight and normal skin. Rainy day or in the evening the sun don't shine, and the overall environment color temperature on the high side, using low color TPS source as main light characters, white balance parameters according to the light Settings, also can easily implement canvas prints images soft contrast of changes in temperature.

When the main character in the room, for the window light, we can adjust the white balance mode for sun, skin restore normal characters, using low TPS source to create interesting prospects of color, form a warm atmosphere. (as shown in figure 7) you can also choose to use low color TPS source as main light characters, white balance parameters corresponding to trim, so house shade and out of the window will naturally presents a cold atmosphere. (as shown in figure 6) can also match the existing sources in the environment to fill light, build the atmosphere environment light feeling, character color can be appropriately warm at this time.

3, Focus outside the colorful spot is the best atmosphere maker

Use light color temperature difference, make fun or foreground, the foreground of will make the picture presents a beautiful and dreamy atmosphere full of colour. Want to implement this picture need to ensure that the following three elements: first, the images of different color temperature of light; Next, the frame should have bright "dot", it will (or its) under the light irradiation as one point light source; finally, the use of large aperture, focal outside the window functions into the illusion of light.

In addition to the following points should be paid attention to, if the point light source is not their own light, the shooting Angle are mostly backlighting, the backlight; Spot blur effect and its related to the relative position of the focal plane; In order to highlight bright spot, should try to choose dark background.

With light painting color control the light source color temperature clap beautiful wedding photos

Convenient low colour removing light tools: 1. The flash light with orange slices. Commonly used in backlight, the backlight or manufacturing, also can do the outline and positive light, but use has some limitations, too bright and too dark or a lot of scenarios, are more difficult to play its capability, because its output power is limited; 2. Warm color light flashlight 2900kA torch light is not strong, use range is not wide, but is easier to control, mainly used in close shot, dark environment make fun atmosphere; 3. The color temperature of 3200 k Led lights. Usually used for positive or large area fill light.

Because the color temperature is low, so the main purpose of the light source is not completely fill light to characters or contours, colorimetric, form a dreamy atmosphere, highlight the unique artistic conception and has become more elements to be considered. Any kind of fill light tools should be combined with the environmental exposure to use, should not be too bright, even positive fill light to be integrated into the overall environment, in the light of the picture than comfortable and contrast to the first principle. Set the white balance to try to restore the normal color of skin, when close to the effect of the sun, in some cases according to the ambient light effect, appropriate warm.