What does aperture mean? Simple.

Aperture is a device used to control the amount of light entering the photosensitive surface of the fuselage through the lens. It is also an extremely important index parameter of the camera. Usually, in the lens, the aperture size determines the amount of light entering the photosensitive element through the lens.

The size of the aperture. Aperture values are usually expressed by f/ 1 and f/2. The larger the number, the smaller the aperture, and vice versa.

Aperture f value = lens focal length/lens aperture diameter.

For example, if the aperture is adjusted from f8 to f5.6, the amount of light entering will be doubled, that is, the aperture will be enlarged by one level. For consumer digital cameras, the aperture f value is often between f2.8-f 16. In addition, many digital cameras can adjust the aperture by 1/3.

The smaller the number after 1 and f, the larger the aperture: the role of the aperture is to determine the amount of light entering the lens, and the larger the aperture, the more light entering;

2. The larger the value behind f, the smaller the aperture: in short, under the condition of constant shutter, the larger the aperture, the more light enters and the brighter the picture; The smaller the aperture, the darker the picture.

How to adjust the aperture of SLR camera to 1? First, adjust the shooting file of the camera to a file.

2. If the camera has a shoulder screen, try dialing the front and rear wheels.

3. If the data of FXX has changed, then the aperture has been adjusted.

4. If the SLR camera has a shoulder screen, turn the dial wheel to adjust the aperture value and display it directly on the shoulder screen. ?

It should be noted that although both aperture and shutter can control exposure, their functions are not equal. The smaller the aperture, the more concentrated the light will be, and it will be easier to image clearly when it reaches the film (or CCD). (Of course, diffraction will occur if the aperture is too small, but it will be blurred. The greater the depth of field, the smaller it will be. Therefore, when the depth of field needs to be accurately controlled, the aperture size can be determined first, and then the shutter speed can be determined.