The role of the hood

Lens hood is a device installed on the front of photography lens, digital camera and video camera to block harmful light. It is also one of the most commonly used photography accessories. Lens hoods are made of metal, hard plastic, soft rubber and other materials. Most 135 lenses come standard with a lens hood, but some lenses need to be purchased separately. The lens hood models used for different lenses are different and cannot be used interchangeably.

What is the use of the hood?

The function of the hood is to suppress stray light from entering the lens to eliminate fog and improve the clarity and color reproduction of the image. The main uses are as follows:

1. In backlight, side light or When taking flash photography, it can prevent non-imaging light from entering and avoid fog;

2. When taking photos with forward light and side light, it can prevent surrounding scattered light from entering the lens;

3 , during light photography or night photography, it can prevent surrounding interfering light from entering the lens;

4. The lens hood can also prevent accidental damage to the lens, and can also prevent fingers from accidentally touching the surface of the lens. To a certain extent, it blocks the lens from wind, sand, rain, snow, etc.

Lens hoods are widely used in backlit photography, generally speaking, to avoid glare. However, if the light source is close, glare may still occur. At this time, you can use your hand to cover the hood on the side where the light source is located. Whether the glare is eliminated, you can directly observe the effect in the viewfinder. In addition to the optical quality of the lens itself, the role of the hood is very obvious. Pictures without a hood are not ideal in terms of color, sharpness and contrast, while pictures with a hood have good performance in several aspects. A small lens hood makes a big difference.

What are the functions of the SLR lens hood?

The lens hood is generally installed in front of our SLR lens, so as to reduce the entry of harmful light. The lens hood is a commonly used accessory for us. one of them. There are many types of lens hoods and they are made of many materials. The more common ones are metal, soft rubber and hard plastic. Lens hoods are not universal, and different lens models have different hoods.

The main purpose of the lens hood is to prevent some stray light, astigmatism and some harmful light from entering the lens, so that when we use a SLR to take pictures, we can improve the clarity of the image and the image color.

Moreover, the lens hood can also protect our lens and reduce the occurrence of accidents. With the lens hood, our fingers will not touch the lens and cause unclearness, and when the weather is bad, When used, the hood also has a certain function of blocking wind and rain.