Photography is a light plastic arts, the research direction, and a light on the role and effect of photography is necessary, so in this simple talk about light direction light a modelling effect for photography. Forms according to the nature of light and the incident direction, color, light wave length, etc. There are a lot of classification. Here introduces the main direction of the light.
the light direction, mainly is relative to the camera also can be said to be based on observer perspective. Refers to between the light source position and direction of the light Angle. One of both the light source location and shooting direction change can be considered a change in the direction of the light. Light the change of direction in three-dimensional space is very rich. The direction of the light is the main landscape modelling condition.
light is constitute by the subject modelling the effect of the light Angle ( Including the horizontal Angle and vertical Angle) 。 Direction of the light is taken in certain conditions, the surrounding is subject for a different location of the lighting changes, in photography light processing, according to the horizontal direction is divided into light, side light ( Inclined side light) , side light, the backlight, backlight, backlight, feet ( Foreleg and hind feet light) Any light depends on determination of viewpoint ( Filming location) , the change of perspective means that the light changes, means that the subject by light area, the change of direction such as light effect.
under the condition of natural light, the sun as the main light. The height of the sun and the change of the Angle formed by the shooting direction of decided to light. Artificial lighting, light can be adjusted according to the requirements of the modelling. A slight change of light can produce subtle changes to the effect of forms.
1, down light, which is also called 'positive' light, the light projection direction with cameras has been lighting direction. Suitable light, your subject is uniform lighting, scenery be itself, the shadow of the tone is soft, can be taken body surface concave and convex subduction and fold, but improper handling will more insipid. Suitable lighting for performance in the frame of atmospheric perspective effect, poor performance space stereo effect also. Also in the tonal contrast and contrast side light side backlight is rich. Suitable light not only the advantages of soft tone, but also can be a very good very good reflect scenery natural colour effect, when light processing, often use the darker frontlighting as vice or ZaoXingGuang light.
2, side light ( Inclined side light) : horizontal light projection and camera Angle of 45 degrees or so at the time of the photography lighting. In the artistic creation of photography, commonly used as a main shaping the light. This kind of light lighting can make your subject to produce light and shade change. Very good show your subject of stereo feeling. The texture and shape, and can rich layers of dark scene, shape function to have very good shape.
3, side light: light projection direction and shooting direction lighting around 90 degrees, the side light objects, there is a clear dark side and projection, the scenery of the three-dimensional shape and texture strong expressive force. On the downside, tend to form a half bright and half dark too eclectic tone and level, in the view of the big occasion often form uneven. This request by smooth scene in the consideration on the composition and shadows on the composition of a picture.
4, the backlight: also called again, the back light. Light projection direction and the direction of the cameras said levels around 135 degrees of lighting. The scenery of the backlight lighting, most in the shadows, on one side of the scene is lighting tend to have a bright outline, can paint the outline form and stereo feeling. Good performance in and out this kind of lighting can atmospheric perspective effect. Figures of the backlight close range and features, generally speaking, the characters do auxiliary lighting, in order to avoid the face is too dark, but the brightness of the light to control of auxiliary lighting, do not affect the backlight natural lighting effect.
5, backlight: also known as 'light' on the back. Light coming from behind your subject light illumination, because from the back lighting, lights the outline of your subject, so also known as light. Backlight is backlight, the backlight, backlight three forms. Under the condition of the back lighting, most scenery in shadow, only by the scenery lighting scene outline, make the scenery different from another kind of scenery, so distinct, atmospheric perspective can be a very good performance, in the panoramic view and vision, often use this ray, make the picture a richer level.
6, top light: the light illumination from above your subject. Under the top lighting, scenery horizontal illumination is greater than the vertical illumination, the distance between the brightness of the scenery, the lack of intermediate level. On people under the roof light, can produce abnormal, strange effect, such as forehead, black eye socket, drooping nasal shadow, more prominent cheekbones cheeks are a shadow, is not conducive to shape characters of aesthetic feeling. If GDP will increase with the auxiliary light shadow brightness light than, also can obtain a better model. In landscape photography, filming location right also can obtain good tone effect. Top light include top the top light, top light, backlight, lighting effect of the two similar, which is similar to inverse effect.
7, feet light: the bottom upward lighting light of characters or the scenery. In the known as the front foot in front of the light, this light to form the bottom-up projection, abnormal shape. Performance is often used as light source of the image, such as lamp, desk lamp, fire and other natural lighting effect. Or special characters used for characterization, special mood, rendering the modelling of special atmosphere. Also can use do facial decoration light, in the foot is called hind feet light behind the scene, the light hair, especially the women's long hair or the details of the scenery has the function of decoration and beautification, in the studio shooting often used as a kind of light effect.