What is the aperture and shutter of the camera What does the aperture and shutter do

The aperture is a device used to control the amount of light that passes through the lens and enters the photosensitive surface of the body. The usual aperture f-values are arranged in order, such as . Roughly multiplied by the square root of 2.

These values are the aperture coefficient, which is the number obtained by dividing the focal length of the lens by the aperture aperture, which refers to the relative aperture, not the physical aperture of the aperture, and is related to the physical aperture of the aperture and the distance from the lens to the CCD. The smaller the aperture coefficient and the larger the aperture, indicating that the larger the aperture, the more light can be transmitted; Conversely, the larger the aperture coefficient and the smaller the aperture, indicating that the smaller the aperture and the less light can pass through. Each increase in the aperture value has the same effect as doubling the shutter speed, and the amount of light is reduced by half.

The aperture can be used to control the length of the depth of field, with the same parameters, the depth of field is shallow at a large aperture and long with a small aperture. When you need to blur the background, you usually use a wide aperture, on the contrary, if you want to get a greater depth of field, use the smallest aperture possible.

Shutter speed, often referred to simply as shutter, refers to the time from the opening to the closing of the camera's shutter, and the sensitivity time of the CCD is controlled by the shutter. Shutter speed is usually expressed as a fraction, and is customarily multiple, arranged in sequences of 1 second, 1 2 seconds, 1 4 seconds, 1 8 seconds, 1 15 seconds, 1 30 seconds, 1 60 seconds, 1 125 seconds, 1 250 seconds, 1 500 seconds, and 1 1000 seconds. For example, 1 100 means that the shutter is open and closed in seconds, and 1 10 is in seconds.

1 2 is a second; 1 4 is the second; 1 8 is the second; 1 15 is the second; 1 30 is the second; 1 60 is a second; 1 125 is a second; 1 250 is a second; 1 500 is a second; 1 1000 is a second).Each doubling of the shutter speed (e.g., from 1 2 seconds to 1 4 seconds) reduces the amount of light transmitted by the lens. Because the shutter speed is increased to shorten the photosensitive time of the photosensitive material, in order to ensure that the photosensitive material can receive light normally, the light transmission of the aperture should be increased accordingly to ensure that the shooting is clear.

Aperture, shutter, ISO, is the camera control of a **is correct** factors, many photography techniques and skills are closely related to these factors, but it is also the most difficult concept for people to understand, correct analysis and understanding of these concepts and flexible adjustment of these values to achieve the best effect of the camera.

The aperture is a device used to control the amount of light that passes through the lens and enters the photosensitive surface of the body, which is usually inside the lens. To express the aperture size, we use the f-value;

For the already manufactured lens, we can't change the diameter of the lens at will, but we can control the amount of light transmitted through the lens by adding a polygon or a circular hole grating with a variable area inside the lens, which is called the aperture;

Shutter is the English name for shutter. The shutter is a device used in camera equipment to control the time when light hits the sensor;

The shutter is the mechanism used by the camera to control the effective time of the photosensor. It is an important part of the camera, and its structure, form and function are an important factor in measuring the grade of the camera. In general, the larger the shutter time frame, the better.

The low second is suitable for shooting moving objects, and one camera emphasizes that the shutter speed can reach as fast as 1,16000 seconds, which can easily catch fast-moving targets. However, when you want to shoot the busy traffic at night, the shutter time should be extended, and the silk-like water flow effect in the common ** must also be shot with a slow shutter speed;

As for the b-shutter function that is common in DSLR cameras, although you can freely decide the length of time** and have more shooting flexibility, most portable consumer digital cameras can't support it yet, and at most provide slower speed defaults such as 2 seconds, 8 seconds, 16 seconds, etc.

What are the functions of aperture and shutter? I'll tell you, see below.

Control the depth of field. When the aperture is widened, the depth of field becomes smaller, and when the aperture is smaller, the depth of field becomes larger. How to adjust the size of the aperture depends on what effect the photographer wants.

When the aperture is widened, the amount is large, and generally when shooting night scenes, the photographer will pick the aperture wider. And when the aperture is adjusted, the amount is small, and the shooting is more natural.

When the aperture is widened, the camera's image will be worse, the larger the aperture, the more blurry the photo, and the smaller the aperture, the more natural the image.

The shutter is to control the size of the ** amount, and it can also be said to be the last step to complete the imaging, when the shutter of the camera is pressed, it is imaged.