What do you mean by front light, side light and back light? Photography.

In natural light, the sun is the main light source. The height of the sun and its angle with the shooting direction determine the level of light. Artificial lighting, light level can be adjusted according to the needs of modeling. Slight changes in the light level will have subtle changes in the photographic modeling effect.

1, front light, also called front light, the direction of light projection is always the same as the direction of camera shooting. When the illumination of the subject is uniform, the shadow of the scene is covered by itself, and the tone is soft, which can hide the bumps and wrinkles on the surface of the subject, but it will be dull if it is not handled properly. Split lighting is not conducive to the performance of atmospheric perspective effect in the picture, and the performance of spatial stereo effect is also poor. In contrast and contrast, it is not as rich as the side backlight. The benefits of smoothing are not only the soft tone, but also the inherent color effect of the scene. When dealing with light, dark smooth light is often used as auxiliary light or modeling light.

2. Side light (oblique side light): photographic lighting when the horizontal direction of light projection makes an angle of about 45 degrees with the camera lens. In photographic art creation, it is often used as the main modeling light. This kind of lighting can change the brightness of the subject. It shows the three-dimensional sense of the subject well. Surface texture and outline, and can enrich the dark level of the picture, play a good role in modeling.

3. Side light: The direction of light projection is about 90 degrees from the shooting direction. Objects illuminated by side light have obvious dark surfaces and projections, which have a strong expressive force on the three-dimensional shape and texture of the scene. The disadvantage is that it often forms too eclectic semi-bright and semi-dark hue and gradation, and often forms uneven scenery of large scenes. This requires that the proportional relationship between the scene and the shadow on the light receiving surface should be considered when composing the picture.

4. Side backlight: also known as back side light and back side light. The light projection direction is about 135 degrees horizontal to the camera shooting direction. Most of the scenery illuminated by side backlight is in the shadow, and the illuminated side of the scene is often sharp, which can better express the outline form and three-dimensional sense of the scene. This kind of lighting can better show the perspective effect of the atmosphere in location photography. When using side backlight for close-up and close-up, it is generally necessary to provide auxiliary lighting for people to avoid too dark face, but the brightness of auxiliary lighting should be controlled to avoid affecting the natural lighting effect of side backlight.

5, backlight: also known as backlight. The light from the back of the object can only illuminate the outline of the object, so it is also called side light. There are three forms of backlight: front backlight, side backlight and top backlight. In the case of backlight, most scenes are in the shadow, and only the outline of the photographed scene distinguishes this scene from another scene, so it has distinct layers and can well show the atmospheric perspective effect. This kind of light is often used to shoot panoramic and distant views, which gives the picture a rich sense of hierarchy. & ampn