​The effects of weather and light on photography

The success of the picture comes from the clever use of light by lighting division and photographer, canvas prints and all the lighting comes from nature. Sunlight and sky light, photographers occasionally intervene to reflect light from the environment. There is no difference between the sunlight in New York and that in China (except for some areas with serious pollution). The clever use of the photographer is completely familiar with the light pattern and shape. This is not difficult, especially for natural lighting...

Outdoor natural light during daylight hours comes directly or indirectly from the sun. Cloudless sunny days are completely direct sunlight illumination, cloudy days are direct sunlight illumination combined with cloud scattering light, cloudy and rainy days are all indirect scattering lighting. Indirect sunlight is commonly called sky light. Different weather lighting modeling effect is different, canvas prints online because of the ratio of sunlight and sky light. Next, analyze the lighting modeling of outdoor photography in turn according to the weather law.

The light comes from the direct sunlight. According to the logical analysis, the modeling effect formed by the light is concentrated, and the brightness difference between the luminous surface and the shaded surface is very large. But in fact, we can't generalize. For example, the morning and evening sunlight appears soft and warm; The sun at or near noon presents the same reasoning pattern. To analyze the reasons:

At sunrise and sunset, acrylic prints online the sun is furthest away from the earth, and light travels a long way to reach the surface. The process of transmission must pass through the atmosphere on the sea surface. The moisture and dust in the air block the transmission of short-wave blue light, while the long-wave yellow and red light can bypass the air medium, so the light in the morning and evening shows a warm tone. Use the camera to show the atmosphere of sunrise and sunset, avoid correcting the white balance, and use the white balance of sunlight to restore to partial yellow tone. In addition to blocking short waves of light, the air medium also softens light. Morning and evening sunlight is not as dazzling as noon, in its lighting is photographed under the bright and dark side of the scene contrast soft, dark as dark as noon into a piece. It is the best light for a film that does not deliberately emphasize the midday atmosphere. The photographer picks the right time and considers the Angle of light and lens, which we will discuss in the next section.

Midday light in photography generally refers to the time zone between 10 a.m. and 4 p.m., which expands in summer. At this time, the sun is above the photographer's head, and the travel distance of sunlight is relatively short. The color temperature is standard, and the colors of all kinds of scenery are perfectly expressed. Shooting scenes on the horizontal surface, such as grassland and desert, can achieve very good effects, with uniform lighting, bright colors and transparent pictures. But photographing a vertical subject, such as a person standing up, is unappetizing.

When the subject is a person, this light is called overhead light. Under the overhead light, the convex part of the light is obvious, and the concave part is almost no light. The image contrasts strongly. The dark areas under the eyes of the characters look like bags under the eyes, and there are large projections under the nose and chin, damaging the overall aesthetic feeling. The whole picture also gives a sense of heat, so to shoot the theme of workers is indeed a good choice, but the ordinary picture is negative.

Top light like

Cloudy light is a combination of direct sunlight and indirect sky light. Their ratio depends greatly on the thickness of the clouds and their distance from the sun. The thicker the clouds and the closer they are to the sun, the smaller the ratio of sunlight to sky light. Sunlight is the main lighting source, which determines the illumination of the bright side. With high scattering degree of sky light and disordered direction, it can provide auxiliary lighting for the shadow part and balance the contrast of the picture. What a photographer should do is observe the brightness ratio of the subject before the formal shooting.

In the cloudy mid-afternoon hours, the effect of the light modeling is not much different from that of the sunny top light, despite the complementary light provided by the sky. Cloudy days are used for longer periods of time than sunny days, with the top light generally occurring between 11am and 3pm.

Some photographers described it as cloudy. The sun is the light source, the clouds are the soft box. Thick, uniform clouds scatter all the direct light from the sun, creating a directionless sky light. It is worth noting first that the color temperature of the sky light on a cloudy day is higher, so the camera white balance calibration is needed, otherwise it will appear a cool tone. Overcast picture without white balance calibration

Logically speaking, shooting on a cloudy day only needs to consider the composition to choose the shooting Angle, but this is not the case. The completely uniform exposure of the picture will make the two-dimensional plane serious. That is, the picture has no three-dimensional sense. Close to photography, setting the foreground can create a stereo effect through the perspective law of near, far and small, but this is far from enough. The stereo of the picture still needs light and shade ratio to build, if receive light completely even on the face of a person, can show fat, and proper shade looks thinner.

On an overcast day with uniform lighting, the photographer must find a way to reduce the amount of light on some of his or her subjects, so as to create a proper light ratio and keep the picture from falling into flatness. Let the subject close to the dark environment, dark environment due to poor reflective performance, the formation of light absorption plate in photography. Contrast is created easily. When women are the main body of the picture, dark background can also better foil the character's skin tone, appear white.

The sky on a cloudy day lacks elements and is much brighter than the landscape on the ground. When shooting, too much blank will cause damage to the picture, cloudy day photography to try to major sky into the picture. We all have a common sense, cloudy when the color of scenery will be heavy because of scattering light ratio appears dim, this can only be in the picture, modeling character from the color side, try to choose bright colors of clothing collocation.

The biggest advantage of cloudy days is that you don't need to care about the shooting period. As long as the light is sufficient, you can shoot, which is its biggest advantage. However, compared with sunny days with strong light, its picture is relatively low visually.

When shooting on sunny days and cloudy days, when the subject is the person, even if the shape of the light is not considered from the Angle, it is necessary to consider whether the person will have open eyes when looking directly into the sun. The weather is soft and hard, custom photo aluminum print the better the weather, the harder the light, the greater the contrast; The vertical Angle of the light is selected in the time period, with the top light at noon and the middle light at night. The latter has a more obvious advantage. The mentioned direct sunlight is the horizontal Angle of light, which is very critical to the modeling of photography. We will discuss the lighting modeling with different horizontal angles in the next chapter.