Six basic elements of photographic light

The six basic elements of photography light are luminosity, light level, light quality, light type, light ratio and light color.

1, luminosity

Brightness refers to the luminous intensity of light source, the excess degree of light on the surface of an object and the brightness of the surface of an object. The light intensity and illumination distance of the light source affect the illumination; Light intensity and surface color will affect brightness. In photography, luminosity is directly related to exposure, and conscious overexposure and underexposure should also be based on accurate exposure. Therefore, mastering the basic skills of breadth and accurate exposure can actively control the tone, color and contrast effect of the subject.

2. Brightness level

Light level refers to the position of light source relative to camera and shooting object, that is, the direction and angle of light. The same object has different light and shade modeling effects under different light levels. The light level in photography is ever-changing. Generally speaking, it mainly includes front light, front light, side light, back light, back light, top light and foot light.

3. Light quality

Light quality refers to the gathering, scattering, softness and hardness of light. Spotlights are characterized by coming from obvious directions and producing clear and heavy shadows; The characteristics of astigmatism make it come from several directions, and the hardness of light depends on several factors. Narrow beams are usually harder than wide beams. Hard light can make the subject have a strong contrast between light and shade, which is helpful to the expression of texture; Ruan Guang is good at revealing the shape, shape and color of objects, but not at expressing the details of texture.

4, light

Light type refers to the role of all kinds of light in shooting.

5. Light ratio

The light ratio refers to the difference in light reception between the bright part and the dark part of the subject, usually referring to the difference between the main light and the auxiliary light. The greater the light ratio, the greater the contrast; There are three ways to adjust the light ratio: adjust the intensity of main and auxiliary light; Adjust the distance between the main and auxiliary lights and the subject; Fill the dark part with reflector and flash.

6, light color

Light color refers to "the color of light" or "the component of colored light". The color of light is usually called "color temperature". Light color is very important both in expression and technology, which determines the cold and warm feeling of light.