How to use multiple flashlights to build an artificial light source for shooting?

First, the characteristics of the flash.

1. brightness: the brightness in photography refers to the brightness of the surface of the object irradiated by the light source. Brightness is closely related to the type, nature and luminous intensity of light source, irradiation distance and the reflection ability of physical characteristics of object surface to light.

There are two kinds of light sources used in photography: natural light sources and artificial light sources.

Natural light source, that is, obtained through the irradiation of the sun. The intensity of sunlight is constant, but it changes with seasons, weather conditions, time, altitude and geographical latitude and longitude.

Artificial light source, as its name implies, is the light used in all kinds of photography. Artificial light source can ensure stable output, but it is closely related to distance. The closer to the subject, the stronger the light. The farther the distance, the weaker the light.

2. Light quality: From the characteristics of light, there are soft light and hard light.

Strong light: it has obvious directionality, produces clear and heavy shadows, and can make the outline of the subject sharp and sharp.

Soft light: there is no obvious directionality, resulting in softer shadows and lower contrast of the subject.

3. Brightness:

Headlight: Also called headlight, it illuminates the subject from the front.

Side light: the light from the oblique side of the subject, which is usually divided into front light, backlight and oblique light.

Backlight: Light from the back of an object.

Top light: Light from directly above an object, such as the morning sun.

Footlight: Light from below the subject.

Scattered light: light without a certain irradiation direction, such as natural light on cloudy days, suitable for taking portraits and remaking printed matter.

4. Lighting type:

Main light: the main light of the subject, which plays a leading role in the expression of the shape, outline and texture of the subject.

Auxiliary light: the main function is to increase the height of the shadow part produced by the main light, so that the shadow part can also present the necessary texture.

Contour lamp: a lamp used to outline an object. Separate the object from the background to make it more stereoscopic.

Background light: the light behind the subject that shines towards the background, which is used to highlight the theme or beautify the picture.

Decorative lamp: used for local decoration of the main body to better highlight the main body, mostly used for shooting jewelry.

5. Light ratio: the light intensity difference between the bright area and the dark area on the object. The greatest significance of light ratio to photography lies in the contrast between light and shade of the picture. Large contrast, visual Zhang Liqiang of the picture; The contrast is small, and the picture appears gentle and soft.

In portrait photography, contrast can represent people well. Gao Fancha is strong, while low contrast is gentle and lovely. In landscape photography and product photography, Gao Fancha has a tough texture; The low-contrast shooting picture looks dull and objective.

6. Light color: it is the color of light, usually referring to the color temperature. Different light colors will have different effects on the demonstration effect, which is of great help to the theme of the demonstration. For example, red symbolizes warmth, yellow symbolizes nobility and white symbolizes purity.

Second, the practical application of various flashlights

1. Settings for the flash.

At present, there are various flash brands on the market, but here we take Canon 430III, 600EX-RT, MR- 14EX II ring macro flash as examples to introduce the specific use process.

Set two flashlights as the same set of slave flashlights.

Fix two external flashlights on the bracket respectively.

Pop-up built-in flash

In the "Built-in Flash Function Settings", set the "Built-in Flash" item to "Simple Wireless Flash"

In M (Manual Exposure) mode, adjust the brightness balance between the subject and the background.

2. Rembrandt fill light

Rembrandt is a world-famous Dutch painter. Rembrandt lighting is a special lighting technology specially used to shoot portraits. When shooting, the shadow face of the subject's face faces the lens, and the light illuminates three quarters of the face. The portrait shot by this light method resembles Rembrandt's portrait, hence the name.

Rembrandt cloth light is also called triangle light in photography, which is formed by the projection of brow bone and bridge of nose and the dark area of cheekbone. Photographers use the "lighting technique" of oil painting masters for reference to determine the shape of light spots.

As can be seen from the picture, the main light is about 45 degrees on the side of the person, and the flash should be as high as possible, and the minimum should be flush with the head of the subject. The auxiliary lamp is mainly filled with front light to eliminate excessive light ratio. The light is head-up and close to the camera. It should be noted here that the greater the light ratio, the greater the contrast of the photo and the harder the hand feel, and the appropriate light ratio can be formulated according to different shooting themes; When shooting models with poor three-dimensional sense of nose bone and eyebrow bone, we should be careful to use triangular light, which will not only not reflect the aesthetic feeling of light, but will expose and exaggerate the shortcomings of the subject; In addition, the main light has no fixed light level, so it is necessary to choose a suitable position for light distribution in order to hit the inverted triangular light block. When the triangular light block is facing the camera side, people's face will look slender and have a strong three-dimensional sense.

3. The use of butterfly lights

Butterfly lamp, also known as beauty lamp, is another common way to fill light, which only needs one light source. Butterfly light can deepen the shadow of a character's cheeks and make his face symmetrically thinner. The setting of light should make the projection through the model's face produce a "virtual makeup" effect composed of eye shadow, blush and lipstick, so that the face of the character has a certain sense of hierarchy. Use a flash to emit strong light and hit the model in the face from the front. The model's nose should be facing the direction of the light source and can't look up, otherwise the expected effect will not be achieved. At the same time, the height of the flash should be adjusted so that the visible projection of the model's nose extends just between the nose and the upper lip.

This kind of fill light is simple. Usually, two flashlights can be used. If the equipment is insufficient, you can also use an easy board to complete the shooting. It should be noted that the auxiliary light is weaker than the main light when shooting.

(transferred from the film and television technology team)