What is light barrier and how to use it in photography?

First of all, the hood is a reflector, which photographers usually use to:

1, fill light

Silver surface is the most widely used and is the main force in the "reflector". It is often used in the case of insufficient light, which can obviously increase the exposure of the underlit part of the subject, thus achieving the effect of supplementing light.

At the same time, according to the light situation, if used reasonably, it is easy to create eye light. In addition, when shooting backlight, you can also use a silver reflector to brighten the backlight direction to avoid overexposure in the bright part or underexposure in the dark part (the distance and direction of supplementary light can be adjusted according to the actual situation).

The fill light of the gold surface can bring a warm feeling to the picture, so it can be considered when the picture needs cold and warm contrast;

The reflection of the white surface is more neutral, softer and more natural than the silver surface, which can be used as a supplementary light for the details of the shadow part and increase the shooting details of the shadow part.

Step 2 darken

The light barrier is not only used to supplement light, but also to reduce light.

The black side is the actual dimming board, also called "light absorption board". Can be used for "shading" to reduce the amount of light. In addition, it can also be used as a black background to set off the main body.

Second, scale.

At present, there are many sizes of hood, 60cm, 80cm, 1 10cm, 150cm. In practical application, too small a mirror has very limited function, and too large a mirror will affect portability and maneuverability. So generally speaking, the average photographer chooses the size of 1 10cm, which is just right, large enough and convenient to operate.

Third, shape.

Mainstream hoods are square, oval and round. However, in practical application, the shape of the hood has no effect on the light compensation effect (mainly the size). So the main consideration is whether it is portable or not.

The price of the hood depends on its material and size. Different materials and sizes have different prices. The general price is between tens and hundreds.

Extended data

As an auxiliary equipment in shooting, reflector is usually used with bracket and light at the same time. Its main functions are:

1, which makes the plain picture more full, three-dimensional and reflects good texture.

2, can refract part of the light, so that the details that need to be highlighted can be photographed more clearly.

3, soft fill light, will not cause the sharp feeling brought by the flash fill light.

References:

Baidu encyclopedia-reflector