The reflective surface is very smooth

The light and dark of the object itself becomes very weak

You can see the surrounding environment information through the reflective surface

The reflective surface is uneven, and the parallel incident light will be reflected in all directions.

Taking the main light source (irradiation light) of the picture as the center of the circle, the closer the object is to the light source, the brighter it will be, and the farther it is, the darker it will be.

Determine the overall light and shadow of the object and express the three major sides (bright side, gray side, and dark side)

Add local light and shadow of objects, mainly for objects with block surfaces (cubes)

The bright side and the gray side also follow the principle of "near bright and far dark" respectively.

Just add a feathered circular spot to the highlight characterization

Bevel highlights: The edges and corners of block objects usually have smooth transitions, that is, bevels.

Overlapping shadow area: When two objects are adjacent, there will be an "overlapping shadow area" on their adjacent side, and the closer the object is, the darker the shadow will be.

When the illumination direction of the light source is at an angle of 30°-60° to the line of sight, it is called front side light; when the angle is 90°, it is side light.

The front side light is generally more light and less dark; the side light is half light and dark.

advantage: The ratio of light to dark is relatively moderate It can ensure the brightness of objects and also highlight the shape and texture of objects.

When the illumination direction of the light source is at an angle of 120°-150° to the line of sight, it is called side backlighting; when the angle is 180°, it is backlighting.

Objects with side backlighting are less bright and more dark; objects with backlighting are almost all dark.

Features: Objects are mainly in dark tones

Ability to outline characters and separate characters and background

The tone is richly varied, improving the level and details of the picture.

The contrast between light and dark is reduced, the shadows of characters or products are shallow, the overall structure is clear and soft, and the structure and three-dimensionality are weakened.

Make characters or products have a strong contrast between light and dark, obvious shadows, and highlighted texture, emphasizing the overall structure and three-dimensionality.

Direct light is hard light

The transition between light and dark of the object is more rigid, with obvious shadow outlines, highlighting the surface structure and texture.

At the same intensity, the contrast between hard light and dark is greater than that of soft light

It is often used to express the strength, toughness and strength of a character, and is often used in categories such as men, sports, and fitness.

Scattered light and diffuse light are soft lights

The transition between light and dark objects is more natural, without obvious shadow outlines, highlighting surface levels and details.

At the same intensity, the contrast between soft light and dark is smaller than that of hard light

It focuses on expressing the softness, freshness and tenderness of the characters, and is often used in categories such as girls and children.

The larger the area of ​​the light source, the smaller the degree of divergence; the smaller the area, the greater the degree of divergence.

The further away from the object, the smaller the degree of divergence; and the closer the distance, the greater the degree of divergence.

The shadows presented will also be more natural and realistic

Proper use will make the picture full of tension and atmosphere, making people’s eyes brighter, as shown in the picture below

The shadow length of the object is greater than the distance between the walls

A "step"-like structure appears in the depression on the ground, and the shadow length of the object is greater than the distance between the corners of the step.

The surface is uneven, and the projected shape also changes shape according to the undulations of the texture.

The smaller the openness, the deeper the shadow; the greater the openness, the shallower the shadow.

The area near the bottom of the object is the least open, receives the least ambient light (scattered light/reflected light), and has the deepest projection.

The area farthest from the object is the most open, can receive the most ambient light, and has the shallowest projection.

Zone 1 is the least open, with almost no light, so the tone is the darkest. This is the darkest area in the projection, called the "vignetting area"

Zone 2 is generally open and receives less light, so the tone is darker and is the "umbral zone"

Zone 3 is the most open and receives the most light, so it has the lightest tone and is the "penumbra zone"

The illumination is direct, and the overall projection is solid, with clear edges and stiff transitions.

The light is soft, the light is scattered, the projection is overall blurry, the edges are blurry, and the transition is soft.

The more realistic the projection

The more blurry the projection

The closer the projection is to the object, the clearer the edge; the further away from the object, the blurr the edge.