I, the effect of light in the art of photography
Photography using light-sensitive materials must be through the light source in order to play its proper role. Light in photography is not only used to illuminate the subject, it is also responsible for the transmission of information about the subject, in this regard it plays a bridge and the role of the medium. For example, the object shape, volume, quantity, color, texture, spatial depth and other information, as well as the object shade of the light and dark configuration, the atmosphere of the screen, levels and many other aspects, must be expressed through the effect of light. Therefore, the photographer can not simply observe the light from the surface image, but in the actual conception of the flexible use of light. In a subject, different lighting angles, illumination, resulting in different effects. However. We must master the effect of light in photography and the "sense of light", good use, a keen sense of the photographer should be instinctive, painters rely on the hands of skilled brush to depict the object, photography with the use of light to show the subject. Therefore, the light is the soul of photography, complete the process of photography needs light, the performance of the essence of the art of photography rely on light, correctly recognize the light, feel through the law of change of the light, to understand the artistic effect it brings, in the creation of the art of photography to fully go to use, in order to achieve the light such as gold, with the light as God.
Second, the light on the expression of photographic art modeling
Photographic art is the art of modeling, light on the expression of photographic art modeling plays a key role. In photographic creativity to have a "light" modeling consciousness, mobilize "light" modeling means, in order to achieve its artistic effect. Photography in the picture of the object to be photographed in the reproduction, through the light as a medium of communication, light on the photographic modeling performance, the rendering of the environmental atmosphere, the expression of ideas and feelings, have an extremely important significance. In nature, light is ever-changing, complex and subtle. Throughout the day, the sunlight changes with the time, and constantly changes the direction, angle and strength of the incoming sunlight, which will bring different effects in photographic modeling. For example, the sun will rise or fall to 15 degrees, that is, the morning or dusk time, which is characterized by a small angle of incidence of the sun, the light on the scene irradiated by the vertical surface of the light area is large, the object produces a longer projection, the light surface and the shadow side of the contrast is large, the intensity of the light is small, softer. In this light conditions, the choice of backlight, side backlight shooting, easy to get a clear sense of air perspective, the picture presents a strong atmosphere, poetic modeling effect. When the sun and ground illumination into 20 degrees to 60 degrees, this light is characterized by a moderate angle of incidence, light directionality clear, small changes in brightness, modeling effect, light and shadow movement slow, moderate color temperature, this is the golden time for photography, this time to shoot the scene is clear, clear shadow, rich levels, conducive to the scene in the modeling to show a sense of three-dimensionality, spatial sense and texture. At this time to choose a different direction of light modeling, so that the scene can get a clear tone, rich layers, strong lines, bright light effect.
When the illumination into 70 degrees to 90 degrees, the sun at noon, the light vertical downlight, the object can only be more light at the top, the vertical surface of the light is less, so that the scene illumination of the contrast between dark and light, the level of the lack of perspective effect is poor, the object modeling the lack of three-dimensional sense. Therefore, in the photographic modeling effect less use of this top light.
From the change of direct sunlight in a day, the effect of modeling is different, we can choose the direction of lighting on the modeling design. Depending on the direction of the light and the direction of the sun, the direction of light is basically divided into smooth light, side light and backlight, which have different effects and impacts on photographic modeling.
Smooth light on the photographic modeling of the expressive power of the object light surface balance, can fully express the texture of the object, the shadow configuration mainly rely on the object's own tone to complete. But the smooth light is generally not conducive to the performance of the object's sense of space and three-dimensionality, the shadow is more flat and monotonous, weak sense of hierarchy, the lack of scientists undulation of the visual rhythm of darkness, more inappropriate to express the spatial sense of the large number of objects, the number of objects in the scene modeling.
Side light on the photographic modeling of the stronger performance, can make the object light surface and dark and light side of the obvious performance, the picture dark and light configuration and contrast sharp and clear, rich object levels, air perspective phenomenon is obvious, conducive to the performance of the object's sense of spatial depth and three-dimensional sense, is the photographic modeling effect of the more ideal light source. But in the use of, pay attention to the light surface and the proportion of dark and light in the picture modeling.
Backlighting in the photographic modeling performance can express the depth of space and environmental atmosphere of the baking, the effect of spatial perspective, conducive to sketching the contours of the object and the number of objects, in the conception of the use of low-key images to show the object modeling art effect is better, but remember to use the dark background to support the main body. When shooting close-ups or close-ups of objects, it is best to use fill light on the front, so that the texture of the front of the object is better expressed, and the exposure is set to positive brightness is appropriate, so that the modeling effect is better.
Correctly recognize the light, grasp the change of its laws, understand it on the photographic art of modeling expression, is the photographer in the "sense of light" in the cultivation of the road must be. Photography in the creation of light is ever-changing, flexible, but its instincts can not be ignored. Light is the foundation of photography, the realization of the technical process of photography through the light, to achieve the artistic essence of photography can not be separated from the light, the art of photography is the art of light and shadow. No light can not get the shadow, and can not form the image of photographic art. Therefore, we are in the photographic conception. To have a sense of light modeling, mobilize the role of light modeling, give full play to the expressive power of light in photographic art modeling.
Three, light on the elements of color reproduction
Light in color photography on the correct color reproduction is a direct factor. Light and color have a close inner relationship, in general, there is light to color, color from the light, and light change. The reason is very simple, people in the light can clearly distinguish the color of the object, if there is no light in the dark, what color is also difficult to distinguish, this is because the color to be irradiated through the light to present. Light acts on human vision in order to make us feel those color sensations. In complex color photography, color correct restoration and reproduction is the key to the success or failure of color photography, light on the color correct restoration of three elements, one is the nature of the light source, the second is the direction of the light, the third is the strength of the light.
The nature of the light source, which has a great impact on the reduction of object color, because daylight and light of different properties, color temperature is different. The color temperature of daylight is 5400K, while the color temperature of the light is only 3200K, in daylight and light, the object will show different colors. Such as red objects in daylight to see bright red, but in the light to see, it will show product red or purple. Because, it is the nature of the light source is different, the color is also different.
The direction of light, in the same object and the use of different angles of light irradiation, such as direct light and scattered light, smooth light and side light, backlight and top light, light irradiation in different directions, so that the object produces different light and darkness, and in turn lead to the color of its color in the restoration of the different differences. Shallow light using the same object of the color of the same light surface, there is no difference between light and dark, resulting in a lack of contrast levels of color light and dark. Side-lighting can make the same object color in the brightness of the darkness to produce a clear difference. Backlighting on the front of the object's color performance is more difficult to restore poor, often using backlighting performance to pursue the overall effect of color. The intensity of the light is also easy to make the object color hue, brightness, saturation changes greatly.
The analysis of the above three elements, emphasizing the color also light, is an important means of modeling color photography, choose the light is to choose the color. Black-and-white photography is the object of the modeling selection of different shades and shadows, levels to performance, color photography is through the color of the artistic expression. Black and white photography is concerned about its use of light, color photography is more rigorous use of light, light can create changes in shade, but also to make the color effect more vivid and expressive. In color photography conception and creation, to understand and analyze the nature of the light source, the direction of light projection, the intensity of light, light on the object in the shape of the performance of the effect. To mobilize the "light" on the color of the artistic modeling, enhance the artistic expression, in order to foresee the color effect of the picture, to create a vivid, touching works of art.
The art of photography is "light" and "shadow" modeling art, the completion of the photographic process must be with the help of light, the correct use and play the function of light in the photographic art modeling, recording, reflecting, performance, transmission of our creative thinking, emotion and Performance techniques, methods, to achieve the visual image of the picture. Light is the soul and pillar of photography, the study and exploration of the kinetic energy of light in photographic art modeling, the purpose is to establish the status and role of light in photography, so that we can better understand it, familiar with it, master it. Better use it, play it. Make photography the art of light and shadow exudes a more brilliant light.