Transmission original analysis (7)

To copy the skin color of a character manuscript to be more ideal, in line with character characteristics, the key lies in the electricity division plate. When the electrical points are calibrated, it is necessary to organically combine the true skin color, the original skin color, and the desired skin color in order to achieve a good copying effect.

According to the study, four points can be obtained for the calibration of electric characters when reproducing human skin color.

(1) The yellow version of the high-light calibration is required to be carried out in the red version, to pull the color level of the face.

The yellow version is the basic color version that composes the skin color and plays an important role in facial skin color changes. The color change, cold and warm relationship, and layered texture of the character's skin color must be enhanced or weakened by the yellow version. Its deep, shallow, flat, and bright colors have a great influence on the entire skin color.

The lightness and darkness of the facial skin tone are caused by a certain shade of light. The reason for the above-mentioned point of electrogravity calibration is that only the yellow version of the high-light calibration and the red version meets the laws of facial structure, light and shadow, and color change, and can show rich facial color changes and various subtleties. Pan color. At the same time, only such a calibration can show a bright and clear level of facial highlights and a realistic texture.

Therefore, this effect can be achieved because: The high light color of the face is generally the skin color plus the light source color, which is a neutral white bright color. The yellow edition is set in red, and the high-gloss neutral white appears bright. According to the principle of shaded light, the brighter the light, the more bluish the hue, the light blue and purple at the highlights of the face and at the midtones. Therefore, after the yellow version of the high light calibration is properly set, it can realistically show this part. The color change and the clear layered texture.

The standard of the yellow version of the high light calibration is: the neutral white part of high light, such as the nose, the high light in the middle of the bridge of the nose, the ratio of yellow to red in the red, generally 2% to 3%, if the red is 5%, the yellow is 2 % to 3%. The best degree of relaxation should be based on a moderate lifting of the facial gradation. For example, the middle point of the forehead and two eyebrow arches are the three highlight points on the forehead. The yellow version raises it moderately, so that the change in the color level of the forehead can be fully expressed. Another example is the location of the cheekbones and other parts of the light, generally pink and white, yellow plate set, you can realistically show the texture of this part of the hierarchy.

The color quantity of the yellow plate is to be accurate, and the accurate dot area should be given according to the conditions such as the skin color density of the manuscript, character characteristics, and printability.

(2) The halftone dot area of ​​the face should be controlled below 50%.

According to the conditions of printing suitability in most factories in China, the correct control of the electric component calibration is an important part of duplicating the skin color of a person, and it is also the key to achieving a consistent tone and improving printability. Now that most of the electricity points are scaled and only the black and white fields are controlled, this method is not very suitable for copying character manuscripts because even if these two points are properly controlled, the tone of the tone in the Chinese tone is fluctuating. Also because some side backlighting, backlit color film original facial skin color, are in the middle tone, this is precisely the printing of the most important changes in the network area. It is a very useful method to adjust and control the tone of a person's face by using the method of moving the midpoint scaling density. The specific method is as follows:

1 The forehead of the face is used as the middle control point;

2 Based on the red dot area;

3 Convert the forehead of the color reversal film (with a density of 1.10 to 1.2) to a dot area of ​​50% or more. Because the dot area of ​​this density range is generally in the range of 52% to 54%, the dot of this range fluctuates greatly and has a great influence on skin color. If the red version of the forehead site exceeds 50%, on the one hand it will cause partial boring, and on the other hand it will affect the amount of ink to be printed.

The above is the opposite side of the original light, as to the light and back light original document problems are not large. Because the smooth light sheet generally has a forehead density of about 0.9 or less and 1.0 or less, according to the standard level curve, standard black and white field calibration, the red printing outlets are all within 40% to 45%, which is ideal. The back light film generally has a forehead density of 1.3 to 1.4, which is dark in the middle tone. According to the standard level curve, the standard calibration, or the lightening (brightening) calibration, the red printing dots are also around 55%. Because the ratio of the dot values ​​of the various color versions of the skin color is deep, it is not a problem.

(3) The skin color of facial dark areas, yellow, red version of the network should be controlled at 80% or less, about 75%, and with the dark color 15% to 20% of the distance.

Some side-reflecting and backlit images of people have a dark shadow on the face, a high color density, and a yellowish brown or reddish hue. At the time of electrical subscripting, the yellow and red versions of the outlets exceed 80%, and even reach 90%, which is close to the dot area of ​​the deep primary colors. Since the hue value of the printing area in this area varies greatly during printing, even if the ink is printed according to the standard, the dark tone of the printed skin tone is also reddish, and the “flame” is pronounced, and is not saturated with the dark original color. It is difficult to take into account. If the printing takes into account the color of the skin, and the amount of ink is small, the color of the skin can be, but the deep original color is not saturated. If printing takes into account the deep primary colors and the amount of ink is sufficient, the tone of the skin may be reddish. So, there is this third point of operation.

(4) Forehead skin color, red version of the network should be shallower than the yellow version. The forehead is the protruding part of the face, which is a part of the larger facial area. Because it is prominent, it has less muscle and it is brighter after receiving light. According to the structure of the face and the change of shade, the skin color of this part must be slightly yellowish and yellowish. Therefore, the combination ratio of yellow and red dots, the red version must be shallower than the yellow version, the general rule is that the red version is lighter than the yellow version 5% to 10%, the exact data according to the characteristics of different characters skin color may be. For example, the "beauty shots" of delicate children and face powders in white and clean, the proportion of yellow and red can be similar, and the average male can increase the proportion. The principle is that the red version cannot be deeper than the yellow version. If the red and yellow versions of the red and white versions are the same and deeper than the red version, the feeling of fullness, boredom and opacity will be given.

When faced with some manuscripts with reddish facial skin tones during the calibration, the red and yellow dots of the skin on the forehead are the same for the control point, and the red dot area is adjusted to be lighter than the yellow plate. The skin color is reddish and it can make the forehead shine. If the forehead color of some manuscripts is partial reddish, it should be modified by the editors to make the forehead bright and realistic.

People's photographic originals, especially half-length shots of close-range shooting, are the most difficult ones for us to copy. However, there are also many rules that can be followed. As long as we master these laws, we can copy the original human skin color to be true, natural, and vivid, and we can make the quality of printed products superior.

(5) The laws of the division of labor of various colors The various editions of the color combination of facial skin color, although different due to differences between men, women and children, there is still a certain pattern of division of labor in each color version.

The yellow version is weak in color values, but it is very sensitive in skin color combinations. It plays a significant role in expressing the light and shade of colors of people's skin color and the changes of coldness and warmth. When the yellow plate is not handled properly, or when the color is used excessively or insufficiently, it will give off color or color cast. In the cheeks, lips and mouth, the yellow version should be lower than the magenta version, in the forehead, the yellow version should be higher than the magenta version. Hair, eyebrows, and eyeballs should be flat, but the depths of hair buns, eyeballs can be black, and the nostrils and shadows should be soft.

The Magenta Edition is a key version of the skin color, which is the key to the expression of muscles and the convergence of high, medium and low tone skin color. The layout should be clean, uniform, moist, light and plump, and all the tones should be connected in nature. The dark tone should not be too deep to prevent the hustle and bustle. The red version should coordinate with the yellow version properly to express the characteristics of the character. The hair, eyes, and eyebrows are slightly flattened. The shapes of the lips and corners of the mouth must be distinguished and should not be hardened. Each of the affected areas of the face should be treated with natural light. The screen angle is selected to be 45°, avoiding the formation of unsightly ripples after intersecting with the yellow plate 90°.

The cyan version is used to represent the level of the facial contours, the light-dark relationship, and the three-dimensional effect of the face, as well as the color change due to the difference in light received by the face. To deal with the cyan level and color ratio is the basis of real skin color. The tone should be slightly longer and the color distribution is full, but it should be pointed. Hair, eyebrows, eyes, and other black areas should be deeper than the yellow and magenta versions, but also emphasize the spirit of the eyeballs. The dark color palette uses the cyan plate as the basis for the balance of the three primary colors to prevent color skipping and color bleeding from occurring.

In short, as long as we master the basic rules of skin color processing, facial skin color processing of people must be atomic as well as true, so that the entire skin color changes in unification, and changes are unified, vividly characterization of the character's mental outlook. Get the perfect art reproduction effect.

Source: Shandong Printing Network