Shunguang photography original prepress copying process

Shunguang photographic manuscripts (hereinafter referred to as shunguang manuscripts) are such that when the incident angle of light and the photographing angle are the same, both the projection and the shadow of the ray are behind the photographed object, and the scenes facing the lens are all illuminated with the same brightness. The work that uses this ray angle to take photos is called the cis-light manuscript.

Due to the relationship between the angle of light used when photographing the original in the photo, the picture has the common features of sharpness, good texture and uniformity, and softness and good looks. The characters are pleasing to the manuscript. They have natural, real-looking, full-faced facial expressions, as well as smooth, delicate, and textured skin. In particular, Shunguang’s elderly images have a certain role in masking and beautifying the image. Scenery Shunguang manuscript, the picture has a uniform brightness, color, real, natural, and coordination. The character or scenery manuscripts that are shot with smooth light also have the characteristics of a tone, flat color, and moderate contrast, which are ideal for copying manuscripts.

However, due to the fact that Shunguang manuscripts are not conducive to depicting spatial, perspective, and three-dimensional feelings in the scene, the picture lacks obvious tonal configurations and contrasts, and the contrast between the entire picture is not strong enough, but the inherent tone of the scene itself, the color The matching and the like constitute an overall uniform picture. The characters are smooth and elegant, and the color contrast is lacking. Even some people who shun their originals (including some flash photo manuscripts), due to the angle of light exposure or improper exposure processing, not only caused a large amount of facial loss, color can not be truly reproduced, the character skin color formed a "big white face", the entire screen distortion , It seems to be rigid and loses the inherent characteristics of the shun manuscript. Due to the equitable relationship between light exposure and the equal light exposure, the foreground, middle scene, and distant vision of the scene are not hierarchically changed, and the silhouette, tone level, and color change of the scene are all achieved by the inherent form of the scene itself. Inevitably lacking the sense of light contrast and contrast, it will inevitably lose its three-dimensionality and sense of perspective. The whole picture is very smooth. The other flaw of the manuscript is that when performing many scenes of characters and scenery, the characters before and after, the scenery Easy to overlap, affect the full reproduction of their number and personality, lose the screen a "breathable" sense.

Therefore, in the pre-press processing, the desktop system operators should not only have superb skills, but also need to have the ability to analyze, study, and appreciate the manuscript, grasp its inherent characteristics or have certain defects, and closely integrate with the prepress You can work on the effective functions, printability, and conditions of the processing equipment to obtain the best copying effect. Therefore, in the prepress processing, you should be aware of the following priorities in the smooth document.

1. While maintaining the brightness, evenness and delicateness of the screen, emphasize the sharpness of the screen appropriately and accurately, but do not overdo it. If over-adjustment, although the definition of the picture has been effectively improved, but the picture will also appear relief marks, directly affecting the soft and true color of the cis-light original, natural inherent characteristics.

2. When dealing with manuscripts with the subject as the subject, it is important to preserve the inherent characteristics of facial expressions that are natural, real, and even and delicate. At the same time, special attention must be paid to the finishing of some defects on the faces of people to prevent the further exposure of defects and affect the reproduction effect. Figure 1 shows the specific situation of the human face. In addition, the amount of color used in yellow and magenta plates should be moderately increased during prepress processing to improve the actual effect of the human skin color.

3. As for the large-scale scenery scene as shown in Figure 2, it is necessary to have a good grasp of the following three relationships in pre-press processing: First, we must properly handle the gradation configuration relationship between the foreground, middle and long shots in the screen, and consciously The prospects should be made more appropriate; the medium-level tonal adjustments should be appropriately proportioned; the long-term perspective should have fluctuations. Second, it is necessary to properly handle the color matching relationship between the foreground, middle and long-term perspectives, and appropriately make the foreground colors more intensive; the amount of medium-range scenery should be appropriate; and the vision should be brighter. Third, in the scenes of the scenes, if there are characters in them, the color of the characters, the relationship between the colors of the clothing and the background should be handled, and the color configuration should not only be properly opened with the background, but also be harmonious and unified. There is no sense of perspective or a sense of color jumping between the characters and the background.

4. For the bright-sweeping manuscript as shown in Fig. 3, the prepress process maintains a uniform, clean, bright and smooth original over a large area, and maintains a large area of ​​bright, uniform, clean, and bright during prepress processing. On the basis of it, we must pay attention to the integrity of the picture. Midtones or shadows must be well-colored to maintain or properly emphasize the contrast of the picture tone, so that the overall picture is kept bright and smooth, and the tone is not overly light. The copy effect.

5. In the use of color processing, it is necessary to maintain the natural, natural and harmonious intrinsic characteristics of the overall color of the directional light. Therefore, in prepress processing, the amount of color used in the basic color system of the main color system should be increased in an appropriate manner, so that the entire screen can achieve relative saturation and real effects in terms of color configuration and color usage.

6. On the basis of maintaining the original level, texture, and color of the original document, we must appropriately increase the overall tone of the yellow, magenta, and cyan versions to be longer, which will help improve the contrast of the overall picture and the contrast of colors, and enhance stereoscopic images in appropriate amounts. The visual effects of sense, perspective, and sense of space.

7. Pay attention to the contrast of the picture. In prepress processing, it is important to consciously emphasize the brightness of the picture, especially the highlights and sub-brightness should be lighted out, and some small highlights can be netted, in order to maintain the clear and pleasing effect inherent in the smooth manuscript. The dark tone must be dark in order to maintain a stable visual appearance.

In short, before the pre-press processing, it is necessary to fully analyze and research the manuscripts of the light, and by grasping its characteristics, the advanced functions such as “light” of the desktop system equipment should be fully utilized, and the advantages and disadvantages should be avoided in the specific operations in order to be effective. Improve the production and reproduction level of communicative manuscripts.